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Mark D. Zacharias[_2_] Mark D. Zacharias[_2_] is offline
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Default Philips receiver 70FR260 does not wake up


"Gerhard" wrote in message
...
Hi,

I am trying to repair a Philips receiver 70FR260 or FA260. It had shorted
clamp diodes and open control transistor for the power relay. I replaced
them, but still the microcontroller does not wake up.
If I pull down the micro output, the power relay turns on the set. All
supply voltages are present but the display is dead. Also removing the
back up batteries for a while didn't help.
The micro controller oscillator is running, all of its signals seem to be
ok, including the key scanning pulses. So its program is probably running.
I would appreciate suggestions to wake up this stubborn receiver!

Best regards,

Gerhard


What about the reset line to the micro?

Mark Z.