UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934
(Amendment No. 1)*

Suntron Corporation

October 3, 2007

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because § 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g) check the following box o.

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See § 240.13d-7(b) for other parties to whom copies are to be sent.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

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Item 1. Security and Issuer

This Amendment No. 1 (the “Amendment No. 1”) to Schedule 13D amends and supplements the Schedule 13D filed with the Securities and Exchange Commission on March 7, 2002 (the “Schedule 13D”) relating to the Common Stock, par value $0.01 per share (the “Shares”), of Suntron Corporation, a Delaware corporation (“Suntron”). The principal executive offices of Suntron are located at 2501 West Grandview Road, Phoenix, Arizona 85023. All capitalized terms not otherwise defined in this Amendment No. 1 shall have the same meanings ascribed thereto in the Schedule 13D.

Item 2. Identity and Background

Item 2 of the Schedule 13D is hereby amended and restated in its entirety to read as follows:

This Schedule 13D is being filed jointly by SUNN Acquisition Corporation (“SUNN Acquisition”), Thayer-BLUM Funding III, L.L.C. (“Thayer-BLUM”), Thayer ï Hidden Creek Partners, L.L.C., TC Equity Partners IV, L.L.C., Thayer ï Hidden Creek Management, L.P., TC Co-Investors IV, L.L.C., Thayer Equity Investors IV, L.P., TC Manufacturing Holdings, L.L.C., TC KCo, L.L.C. (together each of Thayer ï Hidden Creek Partners, L.L.C., TC Equity Partners IV, L.L.C., Thayer ï Hidden Creek Management, L.P., TC Co-Investors IV, L.L.C., Thayer Equity Investors IV, L.P., TC Manufacturing Holdings, L.L.C., and TC KCo, L.L.C., the “Thayer Entities”), Blum Strategic Partners, L.P., Blum Strategic GP, L.L.C., and Blum (K*TEC) Co-Investment Partners, L.P. (together each of Blum Strategic Partners, L.P., Blum Strategic GP, L.L.C., and Blum (K*TEC) Co-Investment Partners, L.P., the “Blum Entities”) (each of SUNN Acquisition, Thayer-BLUM, the Thayer Entities, and the Blum Entities a “Reporting Person” and taken together the “Reporting Persons”). The Reporting Persons are filing this Schedule 13D because they may be deemed to be a “group” within the meaning of Section 13(d)(3) of the Act with respect to the transaction described in Item 4 of this Schedule 13D. Except as expressly otherwise set forth in this Schedule 13D, each of the Reporting Persons disclaims beneficial ownership of the Shares beneficially owned by any other Reporting Person or any other person. The agreement among the Reporting Persons relating to the joint filing of this statement is attached as Exhibit 99.1 hereto.

The following information is provided for the Reporting Persons that are corporations or otherwise constituted by groups of persons:

		Place of				Address of Principal Business
Name		Organization		Principal Business		and Principal Office
SUNN Acquisition Corporation		Delaware		Controlling stockholder of Suntron		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004
Thayer-BLUM Funding III, L.L.C.		Delaware		Controlling stockholder of SUNN Acquisition		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004
Thayer ï Hidden Creek Partners, L.L.C.		Delaware		General partner of Thayer ï  Hidden Creek Management, L.P. and managing member of TC Equity Partners IV, L.L.C.		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004
TC Equity Partners IV, L.L.C.		Delaware		General partner of Thayer Equity Investors IV, L.P.		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004
Thayer ï Hidden Creek Management, L.P.		Delaware		Sole manager of TC Co-Investors IV, L.L.C.		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004

		Place of				Address of Principal Business
Name		Organization		Principal Business		and Principal Office
TC Co-Investors IV, L.L.C.		Delaware		Managing member of TC Manufacturing Holdings, L.L.C. and TC KCo, L.L.C.		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004
Thayer Equity Investors IV, L.P.		Delaware		Member of Thayer-BLUM Funding III, L.L.C.		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004
TC Manufacturing Holdings, L.L.C.		Delaware		Member of Thayer-BLUM Funding III, L.L.C.		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004
TC KCo, L.L.C.		Delaware		Member of Thayer-BLUM Funding III, L.L.C.		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004
Blum Strategic Partners, L.P.		Delaware		Member of Thayer-BLUM Funding III, L.L.C.		909 Montgomery Street Suite 400 San Francisco, CA 94133
Blum Strategic GP, L.L.C.		Delaware		General partner of Blum Strategic Partners, L.P. and of Blum (K*TEC) Co-Investment Partners, L.P.		909 Montgomery Street Suite 400 San Francisco, CA 94133
Blum (K*TEC) Co-Investment Partners, L.P.		Delaware		Member of Thayer-BLUM Funding III, L.L.C.		909 Montgomery Street Suite 400 San Francisco, CA 94133

The following information is provided for the directors and executive officers of SUNN Acquisition (the “SUNN Acquisition Directors and Officers”).

Name		Resident or Business Address		Position		Principal Occupation		Citizenship
Scott D. Rued		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004		President and Director of SUNN Acquisition		Managing Partner of Thayer ï  Hidden Creek		U.S.
Douglas P. McCormick		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004		Director of SUNN Acquisition		Managing Partner of Thayer ï  Hidden Creek		U.S.
Marc T. Schölvinck		909 Montgomery Street Suite 400 San Francisco, CA 94133		Vice President, Treasurer, Secretary, and Director of SUNN Acquisition		Partner and Chief Financial Officer of Blum Capital Partners, L.P.		U.S.

The following information is provided for the members of the Thayer-BLUM Board of Managers (the “Thayer-BLUM Managers”):

Name		Resident or Business Address		Position		Principal Occupation		Citizenship
Scott D. Rued		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004		Member of the Board of Managers of Thayer-BLUM		Managing Partner of Thayer ï  Hidden Creek		U.S.
Douglas P. McCormick		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004		Member of the Board of Managers of Thayer-BLUM		Managing Partner of Thayer ï  Hidden Creek		U.S.

Name		Resident or Business Address		Position		Principal Occupation		Citizenship
Ivor J. Evans		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004		Member of the Board of Managers of Thayer-BLUM		Operating Partner of Thayer ï  Hidden Creek and Chairman of Suntron		U.S.
Marc T. Schölvinck		909 Montgomery Street Suite 400 San Francisco, CA 94133		Member of the Board of Managers of Thayer-BLUM		Partner and Chief Financial Officer of Blum Capital Partners, L.P.		U.S.

The following information is provided for the members of the Investment Committee of Thayer ï Hidden Creek Partners, L.L.C. (the “Investment Committee Members”):

Name		Resident or Business Address		Position		Principal Occupation		Citizenship
Frederic V. Malek		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004		Senior Advisor of Thayer ï  Hidden Creek Partners, L.L.C.		Senior Advisor of Thayer ï  Hidden Creek and Chairman of Thayer Capital		U.S.
Daniel M. Dickinson		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004		Managing Partner of Thayer ï  Hidden Creek Partner, L.L.C.		Managing Partner of Thayer ï  Hidden Creek		U.S.
Scott D. Rued		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004		Managing Partner of Thayer ï  Hidden Creek Partners, L.L.C.		Managing Partner of Thayer ï  Hidden Creek		U.S.
Douglas P. McCormick		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004		Managing Partner of Thayer ï  Hidden Creek Partners, L.L.C.		Managing Partner of Thayer ï  Hidden Creek		U.S.
James J. Forese		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004		Chief Operating Officer and Operating Partner of Thayer ï  Hidden Creek Partners, L.L.C.		Chief Operating Officer and Operating Partner of Thayer ï  Hidden Creek		U.S.
Richard A. Snell		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004		Operating Partner of Thayer ï  Hidden Creek Partners, L.L.C.		Operating Partner of Thayer ï  Hidden Creek and Chairman and Chief Executive Officer of Qualitor, Inc.		U.S.
Ivor J. Evans		1455 Pennsylvania Avenue, N.W., Suite 350 Washington, D.C. 20004		Operating Partner of Thayer ï  Hidden Creek Partners, L.L.C.		Operating Partner of Thayer ï  Hidden Creek and Chairman of Suntron		U.S.

The following information is provided for the members of Blum Strategic GP, L.L.C. (the “Blum Members,” and together with the Thayer-BLUM Managers and the Investment Committee Members, the “Members”).

Name		Resident or Business Address		Position		Principal Occupation		Citizenship
Richard C. Blum		909 Montgomery Street Suite 400 San Francisco, CA 94133		Managing Member of Blum Strategic GP, L.L.C.		President and Chairman of Blum Capital Partners, L.P.		U.S.
Nils Colin Lind		909 Montgomery Street Suite 400 San Francisco, CA 94133		Managing Member of Blum Strategic GP, L.L.C.		Managing Partner of Blum Capital Partners, L.P.		U.S. and Norway
John H. Park		909 Montgomery Street Suite 400 San Francisco, CA 94133		Member of Blum Strategic GP, L.L.C.		Partner of Blum Capital Partners, L.P.		U.S.

Name		Resident or Business Address		Position		Principal Occupation		Citizenship
Gregory L. Jackson		909 Montgomery Street Suite 400 San Francisco, CA 94133		Member of Blum Strategic GP, L.L.C.		Partner of Blum Capital Partners, L.P.		U.S.
Jane J. Su		909 Montgomery Street Suite 400 San Francisco, CA 94133		Member of Blum Strategic GP, L.L.C.		Partner of Blum Capital Partners, L.P.		U.S.
David H.S. Chung		909 Montgomery Street Suite 400 San Francisco, CA 94133		Member of Blum Strategic GP, L.L.C.		Partner of Blum Capital Partners, L.P.		U.S.
Nadine Terman		909 Montgomery Street Suite 400 San Francisco, CA 94133		Member of Blum Strategic GP, L.L.C.		Partner of Blum Capital Partners, L.P.		U.S.
Gregory D. Hitchan		909 Montgomery Street Suite 400 San Francisco, CA 94133		Member of Blum Strategic GP, L.L.C.		Partner, Chief Operating Officer, General Counsel, and Secretary of Blum Capital Partners, L.P.		U.S.
Marc T. Schölvinck		909 Montgomery Street Suite 400 San Francisco, CA 94133		Member of Blum Strategic GP, L.L.C.		Partner and Chief Financial Officer of Blum Capital Partners, L.P.		U.S.

ADDITIONAL INFORMATION REGARDING THE REPORTING PERSONS, THE SUNN ACQUISITION DIRECTORS AND OFFICERS, AND THE MEMBERS

On August 12, 2004, Mr. Malek and Thayer Capital Partners (of which he is the chairman) consented to the entry of an order by the U.S. Securities and Exchange Commission making findings and imposing remedial sanctions and cease-and-desist orders for disclosure violations under the securities laws. The order did not bar Mr. Malek or Thayer Capital Partners from the securities or investment advisers industries, and Mr. Malek and Thayer Capital Partners (currently known as Thayer | Hidden Creek) did not admit or deny the findings. To the knowledge of the Reporting Persons, during the last five years, no other Reporting Person, SUNN Acquisition Director and Officer, or Member (1) has been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors) or (2) was a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

Item 3. Source and Amount of Funds or Other Consideration

Item 3 of the Schedule 13D is hereby amended and restated in its entirety to read as follows:

SUNN Acquisition, Thayer-BLUM, Circuit Test Intl. Grit L.P., Allen S. Braswell, Jr. L.P., Braswell Gifting Trust, Allee L. Braswell and Allen S. Braswell, Jr. as Joint Tenants, Allen S. Braswell III and Allen S. Braswell, Jr. as Joint Tenants, Allen S. Braswell, Jr. as Custodian of Alexandra Braswell UTMA Co., Richard L Monfort TR UA DTD 10-17-86 Walker Lee Monfort TR I, Richard L Monfort TR UA DTD 04-20-86 Lyndsey Meeker TR I, Richard L Monfort TR UA DTD 09-15-91 Sterling Richard Monfort TR I, Monfort Family Limited Partnership, and Rick Montera entered into a Contribution Agreement dated October 3, 2007, which is attached as Exhibit 99.2 hereto (the “Contribution Agreement”). These persons are referred to as the “SUNN Acquisition Stockholders.” In exchange for their Shares, each SUNN Acquisition Stockholder received an interest in SUNN Acquisition. The number and percentage of Shares contributed by each SUNN Acquisition Stockholder (compared to the total amount of Shares outstanding) are as follows:

Name of Contributing						Percentage of Total Shares				Percentage of Total
Stockholder		Shares Contributed				Contributed				Shares Outstanding
Thayer-BLUM Funding III, L.L.C.			24,582,191				98.75	%			89.01	%
Circuit Test Intl Grit LP			133,522				0.54	%			0.48	%
Allen S Braswell Jr LP			37,561				0.15	%			0.14	%
Braswell Gifting Trust			24,455				0.10	%			0.09	%
Allee L Braswell & Allen S Braswell Jr Jt Ten			2				0.00	%			0.00	%
Allen S Braswell III & Allen S Braswell Jr Jt Ten			2				0.00	%			0.00	%
Allen S Braswell Jr Cust Alexandra Braswell UTMA Co.			2				0.00	%			0.00	%
Richard L Monfort TR UA DTD 10-17-86 Walker Lee Monfort TR I			4,898				0.02	%			0.02	%
Richard L Monfort TR UA DTD 04-20-86 Lyndsey Meeker TR I			4,633				0.02	%			0.02	%
Richard L Monfort TR UA DTD 09-15-91 Sterling Richard Monfort TR I			1,985				0.01	%			0.01	%
Monfort Family Limited Partnership			67,875				0.27	%			0.25	%
Rick Montera			35,625				0.14	%			0.13	%
TOTAL			24,892,751				100.00	%			90.1	%

The only form of consideration utilized in this transaction was an exchange of the Shares owned by the SUNN Acquisition Stockholders for shares of SUNN Acquisition.

Item 4. Purpose of Transaction

Item 4 of the Schedule 13D is hereby amended and restated in its entirety to read as follows:

The SUNN Acquisition Stockholders intend to cause SUNN Acquisition to effect a “short-form” merger with and into Suntron under Delaware General Corporation Law Section 253, and then cause Suntron to file a Form 15 (Certification of Termination of Registration of a Class of Security) with the Securities and Exchange Commission.

The short-form merger will enable the SUNN Acquisition Stockholders to acquire all of the Shares they will not already own, and will provide a source of liquidity to holders of those Shares. As a result of the short-form merger, each Share not owned by SUNN Acquisition will be converted into the right to receive $1.15 in cash, without interest.

For more information regarding the purpose of this transaction, see the Schedule 13E-3 of SUNN Acquisition and Thayer-BLUM, filed concurrently with this Amendment No. 1.

Item 5. Interest in Securities of the Issuer

Item 5 of the Schedule 13D is hereby amended and restated in its entirety to read as follows:

(a) The Reporting Persons listed in Item 2 above may be deemed to be members in a group, in which case each Reporting Person would be deemed to have beneficial ownership of 24,892,751 Shares which accounts for approximately 90.1% of the outstanding Shares. To the knowledge of the Reporting Persons, none of the SUNN Acquisition Directors and Officers or Members have beneficial ownership of any of the Shares.

(b) The Reporting Persons have the sole or shared power to vote, direct the vote, dispose, or direct the disposition of the Shares in the following manner:

						Number of Shares as to which there is
										Sole power to				Shares power to
						Shared power to				dispose or to				dispose or to
		Sole power to vote				vote or to direct				direct the				direct the
		or direct the vote				the vote				disposition				disposition
SUNN Acquisition Corporation			24,892,751				0				24,892,751				0
Thayer-BLUM Funding III, L.L.C.			0				24,892,751				0				24,892,751
Thayer ï Hidden Creek Partners, L.L.C.			0				24,892,751				0				24,892,751
TC Equity Partners IV, L.L.C.			0				24,892,751				0				24,892,751
Thayer ï Hidden Creek Management, L.P.			0				24,892,751				0				24,892,751
TC Co-Investors IV, LLC			0				24,892,751				0				24,892,751
Thayer Equity Investors IV, L.P.			0				24,892,751				0				24,892,751
TC KCo, L.L.C.			0				24,892,751				0				24,892,751
TC Manufacturing Holdings, L.L.C.			0				24,892,751				0				24,892,751
Blum Strategic Partners, L.P.			0				24,892,751				0				24,892,751
Blum Strategic GP, L.L.C.			0				24,892,751				0				24,892,751
Blum (K*TEC) Co-Investment Partners, L.P.			0				24,892,751				0				24,892,751

To the knowledge of the Reporting Persons, the SUNN Acquisition Directors and Officers and the Members have no sole or shared power to vote, direct the vote, dispose, or direct the disposition of the Shares.

(c) There have been no transactions of the Shares by any of the Reporting Persons, the SUNN Acquisition Directors and Officers, or the Members in the past 60 days, other than as described herein.

(d) Not Applicable.

(e) Not Applicable.

Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer

Item 6 of the Schedule 13D is hereby amended and restated in its entirety to read as follows:

In connection with the Contribution Agreement, the members of Thayer-BLUM (the “TBF Members”) have entered into a Letter Agreement that governs the relationship of the TBF Members after the completion of the Merger, which is attached as Exhibit 99.3 hereto. The Letter Agreement provides that subsequent to the Merger, the TBF Members will take all necessary action to dissolve Thayer-BLUM and distribute the shares of Suntron (as the surviving corporation to the Merger) held by Thayer-BLUM to the TBF Members in proportion to their ownership of Thayer-BLUM. In addition, the Letter Agreement provides that concurrently with the dissolution of Thayer-BLUM, the TBF Members and the other SUNN Acquisition Stockholders will enter into a Stockholders’ Agreement that will govern the rights of the TBF Members and the other SUNN Acquisition Stockholders, including customary corporate governance provisions, restrictions on the transfer of shares, tag-along and drag-along rights, and registration rights. The Letter Agreement also provides that all fees and expenses incurred in connection with the transactions described therein shall be reimbursed by Suntron following the Merger.

To the knowledge of the Reporting Persons, except to the extent described in this Item 6 or in Items 3 and 4 above, and as set forth in the related Schedule 13E-3, no Reporting Person has any other contracts, arrangements, understandings, or relationships (legal or otherwise) with any persons with respect to Suntron’s securities.

Item 7. Material to be Filed as Exhibits

Exhibit 99.1. Joint Filing Agreement, among each Reporting Person, dated October 3, 2007.

Exhibit 99.2. Contribution Agreement, dated October 3, 2007.

Exhibit 99.3. Letter Agreement, dated October 3, 2007.

SIGNATURES

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated: October 3, 2007

		SUNN ACQUISITION CORPORATION
		By:		/s/ Scott D. Rued
		Name:		Scott D. Rued
		Its:		President
		THAYER-BLUM FUNDING III, L.L.C.
		By:		/s/ Scott D. Rued
		Name:		Scott D. Rued
		Its:		Manager
		THAYER ï HIDDEN CREEK PARTNERS, L.L.C.
		By:		/s/ Lisa M. Withers
		Name:		Lisa M. Withers
		Its:		Attorney-in-Fact
		TC EQUITY PARTNERS IV, L.L.C.
		By:		Thayer ï Hidden Creek Partners, L.L.C.
		Its:		Managing Member
				By:		/s/ Lisa M. Withers
				Name:		Lisa M. Withers
				Its:		Attorney-in-Fact
		THAYER ï HIDDEN CREEK MANAGEMENT, L.P.
		By:		Thayer ï Hidden Creek Partners, L.L.C.
		Its:		General Partner
				By:		/s/ Lisa M. Withers
				Name:		Lisa M. Withers
				Its:		Attorney-in-Fact

SIGNATURE PAGE TO SCHEDULE 13D

		TC CO-INVESTORS IV, L.L.C.
		By:		Thayer ï Hidden Creek Management, L.P.
		Its:		Sole Manager
		By:		Thayer ï Hidden Creek Partners, L.L.C.
		Its:		General Partner
				By:		/s/ Lisa M. Withers
				Name:		Lisa M. Withers
				Its:		Attorney-in-Fact
		THAYER EQUITY INVESTORS IV, L.P.
		By:		TC Equity Partners IV, L.L.C.
		Its:		General Partner
		By:		Thayer ï Hidden Creek Partners, L.L.C.
		Its:		Managing Member
				By:		/s/ Lisa M. Withers
				Name:		Lisa M. Withers
				Its:		Attorney-in-Fact
		TC MANUFACTURING HOLDINGS, L.L.C.
		By:		TC Co-Investors IV, L.L.C.
		Its:		Managing Member
		By:		Thayer ï Hidden Creek Management, L.P.
		Its:		Sole Manager
		By:		Thayer ï Hidden Creek Partners, L.L.C.
		Its:		General Partner
				By:		/s/ Lisa M. Withers
				Name:		Lisa M. Withers
				Its:		Attorney-in-Fact

SIGNATURE PAGE TO SCHEDULE 13D

		TC KCO, L.L.C.
		By:		TC Co-Investors IV, L.L.C.
		Its:		Managing Member
		By:		Thayer ï Hidden Creek Management, L.P.
		Its:		Sole Manager
		By:		Thayer ï Hidden Creek Partners, L.L.C.
		Its:		General Partner
				By: Name:		/s/ Lisa M. Withers   Lisa M. Withers
				Its:		Attorney-in-Fact
		BLUM (K*TEC) CO-INVESTMENT PARTNERS, L.P.
		By:		Blum Strategic GP, L.L.C.
		Its:		General Partner
				By:		/s/ Gregory D. Hitchan
				Name:		Gregory D. Hitchan
				Its:		Member
		BLUM STRATEGIC PARTNERS, L.P.
		By:		Blum Strategic GP, L.L.C.
		Its:		General Partner
				By:		/s/ Gregory D. Hitchan
				Name:		Gregory D. Hitchan
				Its:		Member
		BLUM STRATEGIC GP, L.L.C.
		By:		/s/ Gregory D. Hitchan
		Name:		Gregory D. Hitchan
		Its:		Member

SIGNATURE PAGE TO SCHEDULE 13D