[TechAssist] Re: SONY KP57XBR10W Dead constant led blink
- From: "Damon" <damon101@xxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 16 Nov 2004 19:05:31 -0500
Sounds like Vertical, the + and - 15v is used together to drive the
output.You may have missing input vert sig to the final output (which is
only an op amplifier), I think.
Damon Brunger
Telrad Electronics
Ft. Wayne, IN
----- Original Message -----
From: "Tony S" <tcselectronics@xxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, November 16, 2004 12:40 PM
Subject: [TechAssist] SONY KP57XBR10W Dead constant led blink
> Hi guys,
> This sony is dead has no power supply secondary on audio or main, no code
> given just constant blink.A relay is heard at power plug in. I found that
> if I disconnect the plug with 135v , -15,+15 supplies the power supply
> will come up. at proper voltages .there is no shorts on any supplies or
> sub supplies off the main, the convergence modules have been disconnected
> and the vert out has been disconnected still the supply is loaded. if the
> horiz output and scan output are disconnected at collector the B+ is still
> low about 90v but if the +15, -15v supply are disconnected at supply the
> B+ comes up. just cant seem to find anything shorted. Any ideas
> appreciated.
>
> thanks,
>
> Tony Saracco
> TCS ELECTRONICS
> 406 Andra Ct.
> Gilberts, IL 60136
> tcselectronics@xxxxxxxxx
>
>
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