Mathieu89
New Member
Ih guys,
I've been given a pm1. 5 which exhibits the classic 'thum-thum' syndrom, with light slowly going up and down...
I found one small diode and the 901ohm/56ohm/33ohm trio to be defective and changed them.
I also preventively changed the supply caps. Usually that's enough to give a new life to these amps.
But not that time. The 56 ohm has immediately blown up and burned at switch on...
I take your advise before doing anything more...
Mathieu
I've been given a pm1. 5 which exhibits the classic 'thum-thum' syndrom, with light slowly going up and down...
I found one small diode and the 901ohm/56ohm/33ohm trio to be defective and changed them.
I also preventively changed the supply caps. Usually that's enough to give a new life to these amps.
But not that time. The 56 ohm has immediately blown up and burned at switch on...
I take your advise before doing anything more...
Mathieu
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