[TechAssist] Re: Training manual
- From: Phil Bader <tjanphyl@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 12 Oct 2005 13:23:08 -0400
From TechrepairCD, some video issues, may be similar chassis:
SONY~KV27TS22~INTERMITTENT VIDEO BLANKING OUT IN A AREA THAT WOULD VARY
IN~SIZE AND SHAPE.~~~REPLACED REGULATOR IC601.~~~~~~
SONY~KV27TS22~DARK PICTURE~~~~REPLACE LEAKY DIODE D518 AND R587 1.8 K.
OPEN.~~~~~~
SONY~KV27TS22~PICTURE MAY BLANK IF YOU CHANNEL TO INACTIVE
STATION.~~~~REPLACE DIODE D303 ON THE *A* BOARD.~~~~~~
SONY~KV20TS22~DARK DULL PICTURE (LOOKS LIKE BAD CRT)~~~~REPLACE R701
470K OHM INCREASED IN VALUE LOCATED ON CRT NECK BOARD~~~~~~
HTH.
Phil
Philip Bader
Jan Phyl TV Inc. (estab. 1976)
3420 Recker Hwy. Winter Haven, Fl. 33880
Fax (863) 299-8821
email: tjanphyl@xxxxxxxxxxxxxxx
personal/ alt. email: pbader@xxxxxxxxxxxxxxx
see our ad at:
http://jan-phyl-television-pc-monitor-service.9601288257006.worldpages-ads.com/
Phil Bader wrote:
>What happens if you advance the G2 screen pot a bit? These are typical
>of the "IK" circuitry blanking the video if the CRT emission is low. A
>quick test is locate the low-ohm CRT filament resistor that supplies the
>6.3 volts to the tube. Jumper it.This will increase the CRT filament,
>not unlike the old "Boosters" did. If the picture returns, weak CRT. You
>can't keep that jumper there long term, as the CRT will just burn itself
>out soon.
>Phil
>
>Philip Bader
>Jan Phyl TV Inc. (estab. 1976)
>3420 Recker Hwy. Winter Haven, Fl. 33880
>Fax (863) 299-8821
>email: tjanphyl@xxxxxxxxxxxxxxx
>personal/ alt. email: pbader@xxxxxxxxxxxxxxx
>see our ad at:
>http://jan-phyl-television-pc-monitor-service.9601288257006.worldpages-ads.com/
>
>
>
>Barry Thompson wrote:
>
>
>
>>Neeed a training manual for a kv 27s22, no video, changed vertical ic.Still
>>the same.
>>
>>Barrys TV
>>Ottawa
>>Canada
>>
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