[TechAssist] Re: Zenith A32B41W 32" TV main module 9-2003 low red output
- From: <support@xxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 8 Dec 2003 22:10:33 -0500
Leonard,
First check the 120k resistor on the Red CRT board...
From Tech Repair CD:
Zenith\A32B84R 9-2003\Picture Green. Tube checks good\\\9-2003\Check Q2203
Q2204 Q2205 {main board} They
get leaky* should remove to check\Check R5141 R5142 R5143 {120k} on CRT board..
YOU MUST REMOVE TO
CHECK\\\\\\\
Jeff Dougherty
Intrepid Video TV/VCR
263 S Front St
Steelton PA 17113
fax...717-564-4952
www.intrepid-video.com www.tech-repair.net
----- Original Message -----
From: "Leonard G. Caillouet" <lcaillo@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, December 08, 2003 5:37 PM
Subject: [TechAssist] Zenith A32B41W 32" TV main module 9-2003 low red output
This appears to have a bad videoprocessor U1201 TA1268N. The CRT tests fine
(at least for a zenith), the video buffers and amps on all three lines and
all related parts are OK but I get no effect when adjusting the red in the
service menu. The red output from the TA1268N has blue in it and will not
change with adjustment. The output at that point looks compressed and
clipped. I can't see anything else that might account for this but have run
into enough wierd CRT bias and drive problems in Zeniths that I thought I
would ask. TA1268N is a high failure part and I have seen some strange
stuff with it but never this one. Anyone ever run into something like this?
Leonard G. Caillouet
Electronics World
Gainesville, FL
352-332-5608
352-332-5668 (fax)
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