Zoek

[mingualez]

Firstly I must appologise for writing in English!!

I have a PM55 amp. Which I have just got out of storage to try to fix. It sometimes works then makes clicking noise through speakers. Then fuses.And sometimes will not work again for a few days!! I have read this is someting to do with the relays that chorode.

I am a novice with electronics so please be easy with me  How do I identify the relays to clean up. Or do you guys perhaps have another solution.

Big thanks in advance!!! Lee

[jrm]

Welcome mingualez,

Do you live in the Netherlands?
If you do so, then you can contact our friend and master fixer HAL9000!

He knows a lot about Marantz and he fixed mine 2226B very well!

[mingualez]

Sadly no!! I'm trying to fix myself as the service cost out ways the value!! Thanks for your time.

I'm in the UK.

[mars]

 

Open up youre amp put it on power , and then switch the selector ( DON'T TOUCH ANYTHING WHEN OPEN) , usualy you can see the relays working ( were the clicking noise is coming from)

Sorry for my poor english , its better for me to speak youre lanquage

grtz  Mars

[mars]

edit ; i mean , don't touch anything inside when the amp is open

[mingualez]

Hey mars thanks. You write better english than me  . I will try this. If you don't hear from me again it may mean I have electricuted myself LOL.

[mars]

 

I really don't hope to see the famous mushroom cloud above the   UK when you open up youre amp !!!

[HAL9000]

Firstly I must appologise for writing in English!!

I have a PM55 amp. Which I have just got out of storage to try to fix. It sometimes works then makes clicking noise through speakers. Then fuses.And sometimes will not work again for a few days!! I have read this is someting to do with the relays that chorode.

I am a novice with electronics so please be easy with me  How do I identify the relays to clean up. Or do you guys perhaps have another solution.

Big thanks in advance!!! Lee

Hi there,

You need to replace the hybrid  integrated circuit.  STK-xxxx
Look for  bad  solder spots  and  burned  components.
Also  replace all the ELNA capacitors. 

These amplifiers really sounds  nice!  i have a Pm64 (15 years now).

Jon

[mingualez]

Ok it's been a long time  :yes: Been using different amp. But really want to get this one fixed. Having trouble identifying relay to clean corrosion off. Tried to upload a pic, can browse and find file but cannot upload to post. I am struggling to translate forum. Not sure you can see??
Thanks for help in advance :-)