[TechAssist] Re: Sony KV27EXR25 pulsing HV - not starting up
- From: Gary McCartney <gary@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 15 Oct 2005 17:16:50 -0400
check these out:
SONY KV27EXR25 DEAD, CLICKING NOISE, B TOO HIGH CHECK R673 4.7
FOR OPEN
SONY KV27EXR25 DEAD, CLICKS, SWITCHING XFMR HAS NO POWER OUT-BOARD
G REPLACE IC651 STRS6301, R656 560, Q611 2SC3311A
Gary McCartney
McCartney Electronics
Guelph Ontario Canada
Est. 1984
email: gary (at) number63.ca
Peter oliver wrote:
> 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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