[TechAssist] Re: Sony KV27FS100L
- From: Phil Bader <tjanphyl@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 01 Oct 2005 12:18:24 -0400
Here's a SD issue with a KV32FS200:
It comes up, immed. SD. Replaced jungle,fly, micro on A board,no help.
On the GK smps board, scoped all PS sources and one was going too high:
7.5 VDC source went to over +8V just before SD. Traced problem back to a
SMD diode D620. It was open. Fixed.
HTH.
Phil
Philip Bader
Jan Phyl TV Inc. (estab. 1976)
3420 Recker Hwy. Winter Haven, Fl. 33880
Fax (863) 299-8821
email: tjanphyl@xxxxxxxxxxxxxxx
personal/ alt. email: pbader@xxxxxxxxxxxxxxx
see our ad at:
http://jan-phyl-television-pc-monitor-service.9601288257006.worldpages-ads.com/
Paul wrote:
>How reliable are blink codes? This set is becoming more of a problem than I
>first thought. The blink code is four, indicating a problem in the vertical
>circuit, as I suspected before getting the service manual. I replaced the
>vertical I/C as the most likely cause per the self diagnostics. Problem
>remains, that being the set tries to start but never makes enough B+ and goes
>into stand by. I removed the HOT and replaced both switching mosfets. Nothing
>has changed. I have checked the lytics in that circuit, and supply resistors.
>Nothing shorted or low to ground on the B+ line.Haven't found anything bad
>yet. When I took the back off and saw that the chassis was the one that has
>bad tact switches I headed there first. Anyone familiar with this chassis and
>this problem?
> Paul
>
>
>Paul ,B
>Central TV&Video
>911W Grand Ave
>Grover Beach Ca.
>(805)481-8084
>
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