Penta III display probs

3 replies
S(
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stevequinn (archived)
Bronze
Posted April 19, 2008 at 07:54 GMT
#1840921

Hi, more Penta issues to share beyond my Beolab amp probelm which turned uot to be a diode...

DI
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Die_Bogener
Bronze
Posted April 19, 2008 at 11:40 GMT
#1840922
Yes. Dead capacitor (the 470uf) with a shortcut killed the 4.7 Ohm resistor in the display. 
S(
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stevequinn (archived)
Bronze
Posted April 19, 2008 at 18:48 GMT
#1840923

Thanks for your answer, but I am confused - according to my diagram and component lists, there is no 470uF cap on PCB 22...

The display boards themselves work fine with the 'good' amp unit connected.  I swapped PCB 22 in the amps and it certainly seems to be an issue with that board.  It is the one with all surface-mount components and sits in a steel bracket back-to-back with the main Amp board PCB 1, connected to it with red and black wires...

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