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Old 02-13-2018, 12:48 PM   #29
R_J
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Join Date: Jun 2012
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Default Re: Philips FR-740 working but no audio output

That is because the scope is not grounded, if you place the probe anywhere you will see that, if you touch the probe with your finger you will see that also
Didi you ever check the voltage on (page 78) transistor 7253, base should be 0 collector 5 volts or measure on (page34) plug 1426 pin 2

Did you ever run the Service Test Program ? (page 27) and (page 28) various other tests, and run those two tests, the last one should reset to factory.

Last edited by R_J; 02-13-2018 at 01:20 PM..
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