[TechAssist] Re: Toshiba CX3586A/TAC9191 Shut Down
- From: Eric Manuel <tvman@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 02 Jun 2005 09:08:37 -0230
Perry something to check Eric
CX3586a, TAC9191 no power, relay may click on plugin' and
shutdown C871, 22uf@50v
TAC9191 Dont come on, relay clicks. Replaced C871 (22uf/50v
105') on power board.
Eric
E M Electronics
Deer Lake Nfld
Canada
tvman@xxxxxxxxxxxxxxx
Perry Alevras wrote:
> This unit will shut down immediately after power
> on.The high voltage comes up to full output.Went
> over this thing with a fine tooth comb for
> solder and cracks .I found that on standby,
> something is pulling hard on the 12V Regulator,
> bring it down to 5V(U801 MC7812CT).Replaced it
> just for grain's .Used Toshiba parts of course.
>
> Parts replaced on power board PB1797.
> IC801 STR-S6501,Q845 S1854,& Q862 2SC1815.
> I am focusing on the control processor IC501
> (B0383693/TA8745DN)which I have not found a
> replacement for.Thought this would be a good
> time to get some insight.
>
>
>
>
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