[TechAssist] Re: Sony KV27EXR25 pulsing HV - not starting up
- From: "Tel-Tek Electronics" <teltek3@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sat, 15 Oct 2005 17:59:01 -0400
Peter;
HV can't be present at the anode...
Whatever means you are using to measure....I presume "2nd Anode"...
2nd anode doesn't discharge quickly enough to give an indication of
anything.
Probably a Regulator problem...KV27EXR25 and others have "Cap" problems.
Look for C655 on the G PCB.
47ufd/50Volts.
-Ed-
Tel-Tek Electronics
Ontario-Canada
teltek3@xxxxxxxxxxxx
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Peter oliver
Sent: Saturday, October 15, 2005 5:07 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Sony KV27EXR25 pulsing HV - not starting up
Sony
KV27EXR25
Ran into an odd problem: This set seems to be attempting to
start,
the HV pulses repeatadly but the set never fires up. the STRS6301 has
been
replaced, and connections touched up on the power sypply, Vert IC,
HDT,....
The frequency of the sound the pulse makes sounds high although the 200v
supply only makes it to ~115v during a pulse. HV is present at the
anode.
Peter Oliver
Tucson Radio TV
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