Re: 32" Hitachi model:32CX32B,chassis:A3LXU


<sidneybek@xxxxxxxxx> wrote in message
news:1124499599.748209.267160@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Thanks Lakewood for R721 value.
>
> Now after replacing the parts in the vertical section I tried to turn
> the tv on but it would not,when power button is pressed the relay
> clicks but no hv.I measured 160v at pin 4=ouput pin of I901=STR30130 so
> I replaced it along with C906=22 Uf,160v but 160 is still present and
> not 130v.I measured the standup ceramic resistors in & around the power
> supply but no luck anyone have any repair tips?.Thanks.

I haven't got the diagram here but... STR30130 in a 32" CTV?
That is a 1 (1.5?) Amp regulator isn't? Is it part of a switching
power supply? If not then it must be pushing its limits and you
are most likely measuring 160 V because there is no load on the
B+ line. There usually is an ~180 ohm resistor across that old
130 V regulator. Check the resistor that feeds the HOT. The
HOT (maybe open) itself or the flyback. Otherwise, scope the
Hor. drive voltage... that would be a good place to start.

Good Luck.


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