[TechAssist] Re: Sony KV27S66 BA4D shutdown

Hi Peter replace D620 may be breaking down under load   Eric
Eric Manuel
 E M Electronics
 Deer Lake Nfld
 Canada

Peter oliver wrote:
> 
> Sony
> KV27S66
> BA4D
> 1999
>            Set in shutdown mode. Blinks 4x-sugestive of deflection failure.
> If several attempts are made and CRT warms see mometary horz line. Replaced
> vertical IC and also Jungle IC using the newer replacment BS variant, No
> luck still shuts down, sounded like  a short but that is sound iis coming
> from degauss coil, have also pulled and rung Flyback. Was thinking could  be
> regulation problem as in the moment  of start up the voltage on pin 1(
> comming off B+ thru a 10K) of the opto isolator is ~90v pin 2 from the error
> amp is ~14V. Transistor portion does not appear to turn on. Power supply is
> of the quasi resonate variety incorperating STRF6626 have both the eletronic
> schematic copy and one on paper. [was looking on 2 fronts either someting
> failed spontaiously or was affected by power surge as it is our summer
> thundrstorm season]
> 
> Peter Oliver
> Tucson Radio TV
> 
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