[TechAssist] Re: Sony kv20ts29 no horiz lock no audio
- From: "Damon" <DAMON101@xxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sat, 2 Feb 2002 07:20:29 -0500
Don't know if this will help, did you scope the E mitter to Collector
connection of q601/602 and does the signal look balanced (50% duty cycle)?
Does the signal look clean, no spikes, transients?
Then its okay.
Your other problem sounds like EEPROM or your data or clock line is bad, you
should have 4.8 to 5.0 volts of signal getting to your tuner, video jungle
etc.
Damon Brunger
damon101@xxxxxxxxxxxxxx
Telrad Electronic Services
Ft Wayne, IN 46815
----- Original Message -----
From: "Richard Golden" <reldong@xxxxxxxxx>
To: "techasst" <techassist@xxxxxxxxxxxxx>
Sent: Friday, February 01, 2002 8:21 PM
Subject: [TechAssist] Sony kv20ts29 no horiz lock no audio
>
> Sony kv-20TS29 came in dead, Replaced Q603, Q604,
> R610,Checked all resistors and diodes in power supply.
> They checked good.TV came on has picture no audio,
> Horiz.won't lock in.Went into service mode,and set
> horiz. TV still wont lock in.I can press volume and it
> will show volume bar on screen but won't move. Menu
> works will auto program.But channel 4 stays on screen?
> I can change channels by dialing numbers on remote
> but,
> dip lay shows channel 4.Q603 and Q604 seems to be
> running too hot.But have not shorted, I used 2sc4834
> Any ideas greatly appreciated.
> thanks, Richard
>
>
>
> =====
> Richard Golden
> Golden Video Repair Center
> 1214 e. 6th street
> ontario ca. 91764
> (909)988-3356
>
> reldong@xxxxxxxxx
>
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