[TechAssist] Re: Sony KV32XBR25 dead-mostly relay chatters momenarily and Degauss
- From: "tony saracco" <tcselectronics@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sun, 3 Aug 2003 18:04:44 -0500
I had one that chattered the relay at turn on then shut down. It turned out
to be a shorted zenior off the audio output.
Tony Saracco
TCS ELECTRONICS
Elgin , IL 60120
847-695-1928
tcselectronics@xxxxxxxxxxxxxxxx
----- Original Message -----
From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, August 02, 2003 5:02 PM
Subject: [TechAssist] Sony KV32XBR25 dead-mostly relay chatters momenarily
and Degauss
> Sony KV32XBR25
> MFD 1992
>
>
> Unit is mostly Dead. At plug in there appears to be degauss
> activity and the relay Chatters mometariy. No discerable HV though. Is
> Inert after inital activity. Standby voltages to the main board 7V = 10V
> 17v=20V. Soddered the 12 v regualtor mid chassis and inspected for bad
> connections none with sucess. Have tried the G board in a KV27XBR35 and it
> works (boards are essentaily the same except for degasuss plug), The G
board
> from the 27XBR35 will not start the 32xbr25 but both boards start the
> 27xbr35 (I have replaced a weak C662 on the G board). On the 32XBR25
there
> is no IR headphone module and No switchable 12V regulator.Also there I
find
> no trace of C665. Testing for voltage at the collector of HOT shows only
> the decay from the Intial turn on pulse.
>
> Peter Oliver
> Tucson Radio TV
>
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