[TechAssist] Fw: Sony KV-32s20 No Audio or Video? flashing panel light continuously?
- From: "Bruce Tiedeman" <btied@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 16 Dec 2005 16:59:08 -0500
Sorry for the double post , first one missing signature file!!
Subject: [TechAssist] Sony KV-32s20 No Audio or Video? flashing panel light
continuously?
> Help appreciated,
> I suspect the jungle I.C, but want to check in before ordering the part..
> I
> have high voltage. Turning up the screen control fully produces a dark
> raster. If I remove the CRT video board, the light on the front panel
> still
> is flashing . I do have 203 volts at each cathode on the CRT board. I can
> follow the video signal into IC 351 but at pin 4(6) it is gone only a
> curved
> trace. The IK input to this I.C has 2.5 volts. I have checked all the caps
> around IC351. I did change the 3.57 MHZ crystal but still have poor
> reading
> there with my scope .I suspect this T.V was worked on previous showing I.C
> 351 and I.C 1261 freshly soldered.
> I can change the tuner channels and send a RF signal through so figure the
> tuner is OK. I do not have a trouble shooting guide so this is what I have
> checked.
> Any help would be appreciated,
> I do have a print,
> thanks
> Bruce.
B&T Electronics
139 Margaret St
Sarnia Ontario
Canada
N7T 2Y3
519 344 1850
>
>
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