PM50 Marantz amplifier schematic diagram
chris000
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willou-78 Posted messages 68 Status Member -
willou-78 Posted messages 68 Status Member -
Hello everyone, I own a Marantz PM50 amplifier, and I have a problem with a fault regarding an internal circuit breaker that cuts off one of the two output channels. I would like to get the schematics for this amplifier if anyone has them. Thank you all and have a good day.
10 answers
Good evening,
STK3062IV replaced by STK3082III, power supply switched to 240 volts. Everything works perfectly except for my left channel issue on speaker series 1. Otherwise, I do have both left and right channels on the second output (speaker 2). I will disassemble it and probably change the corresponding relay.
Daviken
STK3062IV replaced by STK3082III, power supply switched to 240 volts. Everything works perfectly except for my left channel issue on speaker series 1. Otherwise, I do have both left and right channels on the second output (speaker 2). I will disassemble it and probably change the corresponding relay.
Daviken
Hello.
I doubt you’ll find that.
A Marantz should be repaired by a pro, don’t hesitate to get multiple quotes especially!
--
*** Hard to find the info! ***
*** Helping you is a pleasure that should remain so ***
I doubt you’ll find that.
A Marantz should be repaired by a pro, don’t hesitate to get multiple quotes especially!
--
*** Hard to find the info! ***
*** Helping you is a pleasure that should remain so ***
Hi, to avoid this problem, you need to use a compressed air can inside the amp. You open the top part, spray a little bit everywhere, and let it run for a little hour at medium volume, just to see if it still crackles. If not, it’s fixed ^^
Have Fun
Have Fun
Hello,
If you are still looking for the plan, I can provide it to you. Probably one of the two relays is defective or stuck.
Best regards
If you are still looking for the plan, I can provide it to you. Probably one of the two relays is defective or stuck.
Best regards
re,
the recurring problem with the PM50 is the 15-pin preamp module. The STK3062 that eventually fails due to the voltage increase in our households, which has gone from 220 to 230, even 235 Volts.
Solutions:
- replace the 3062 with a 3082, which can handle higher voltages
- modify the input wiring of the transformer from 220 to 240V
The 3 I repaired had the same failure ;)
it costs less than 15€
the recurring problem with the PM50 is the 15-pin preamp module. The STK3062 that eventually fails due to the voltage increase in our households, which has gone from 220 to 230, even 235 Volts.
Solutions:
- replace the 3062 with a 3082, which can handle higher voltages
- modify the input wiring of the transformer from 220 to 240V
The 3 I repaired had the same failure ;)
it costs less than 15€
Good evening,
Yes, I read online that the STK3062 was frequently the issue and that it could be favorably replaced by an STK3082.
In my case, the left channel does not work on the first set of speakers. However, on the second set, both channels work correctly. I just got this amplifier, and I will let it run for a while to check if there are any other problems.
Best regards
Yes, I read online that the STK3062 was frequently the issue and that it could be favorably replaced by an STK3082.
In my case, the left channel does not work on the first set of speakers. However, on the second set, both channels work correctly. I just got this amplifier, and I will let it run for a while to check if there are any other problems.
Best regards
Good evening,
oh yes, so it's the output B that isn't working? It must just be a relay problem then.....
Good luck
oh yes, so it's the output B that isn't working? It must just be a relay problem then.....
Good luck