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Old 27th February 2009, 02:16 PM   #11
49 - for the 18th time
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Originally posted by EDDELARUE


It was the same mode as Yamaha M-85 ?
I have no idea if it was the same mode as Yamaha - but you have made me curious so I will see what I can find out. Most likely won't have much luck tho

Perhaps there is someone around that has worked on both amps that might be able to inform us with first hand knowledge.
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Old 27th February 2009, 02:26 PM   #12
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Originally posted by EDDELARUE


It was the same mode as Yamaha M-85 ?
Similar
http://www2.yamaha.co.jp/manual/pdf/.../SepA/M-85.pdf
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Old 27th February 2009, 07:44 PM   #13
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Yamaha M-85 is a class G amplifier type. It has two power supplies for output stage and it has one switch to select "class A" operation too. The M-85 model belongs to "Natural Sound" line amplifiers from that manufacturer.
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Old 27th February 2009, 08:09 PM   #14
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Look this
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Old 27th February 2009, 08:11 PM   #15
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Look this,
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Old 28th February 2009, 11:00 AM   #16
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Ops! Im sorry for empty replies...

Look this,

Yamaha M-60
http://www.hifiengine.com/manuals/yamaha/m-60.shtml

This schematic is very similar to M-85. It is class G too.

Marantz PM94
http://www.hifiengine.com/manuals/marantz/pm-94.shtml

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Old 28th February 2009, 04:33 PM   #17
data is offline data  Australia
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Bulging or leaking caps? replace them for sure...

I have a PM64ll from the same series, personally I'm going to re-cap this whole amp.

20 years old and producing the levels of heat that they do, makes me think that a Re-cap is in order. This one of mine has DC passing through from the phono stage, so that's maybe a bad cap or caps.

The PM94 is a beauty, should serve you well once the repair is done
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Old 17th June 2009, 03:51 PM   #18
Ganx is offline Ganx  South Africa
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Hiya Seafire,

Did you get results on that PM94??

Just curious as just done one - they are a whole lot of amp!!
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Old 23rd November 2009, 08:47 AM   #19
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hi, i have one of these amps with a burnt resistor on the underside of it, near the front on the middle pcb, there is also a cut in the track in the same area, does yours have this? if so could you tell me the resistor value?

regards

chris
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