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Old 1st April 2012, 03:01 PM   #1
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Default Nytech CPA602 Recapping ...

Gentlemen,

I want to recap my Nytech CPA602's. Can somebody give me some tips what to do and which cap's are the best todo this?

Actually I have three 602's and want to sell one again when I'm finished.

Regards from Germany

Ingo
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Old 1st April 2012, 09:49 PM   #2
lohk is online now lohk  Europe
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I recapped one in the 80ies - input elcap and output cap from both amp modules PLUS power supply elcap. schematics are equivalent to the other Nytech schematics.
If you have more than one CPAs than you probably have an active system - are the crossover boards still inside the amps?
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Old 2nd April 2012, 05:50 AM   #3
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Quote:
Originally Posted by lohk View Post
I recapped one in the 80ies - input elcap and output cap from both amp modules PLUS power supply elcap. schematics are equivalent to the other Nytech schematics.
If you have more than one CPAs than you probably have an active system - are the crossover boards still inside the amps?
Yes, I have an active System. I will use the crossover out of the CXA252 where the amps are inside.

Does it make sense to replace also the caps for the Power Supply?

Any tips which cap's I should use in the CPA?

Grüsse nach Östereich
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Old 7th May 2012, 08:59 PM   #4
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No tips from the Guru's?...

Also need some tips to recap the electronic Crossover from CXA252 ...

Tips are very welcome ....
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Old 28th May 2012, 06:56 PM   #5
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Any good advice welcome .. I have a Nytech amp which has just blown the 3.15A slow fuse on the power supply board. From memory this can result from one of the power caps dying.. Replacing the fuse and it blows again.. so suspect the power cap(s)
The caps in question are 3300uf, 63V case size 35mm diameter, 30mm high, pins 10mm apart.
So I know that I dont know where to best find replacement parts for these and would appreciate the help to find some.
Alternatively, feel free to suggest alternative root causes. or just tell me to pay a pro to do the job for me.
Thanks in advance
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Old 28th May 2012, 10:36 PM   #6
Itsmee is offline Itsmee  England
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There is some info here, the Elna Silmic II are very nice.

Recapping of Nytech CPA 602 - pink fish media
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Old 29th May 2012, 11:47 AM   #7
AndrewT is offline AndrewT  Scotland
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Build a mains bulb tester.
Power up the amplifier via the mains bulb tester. Now measure voltages. Mark those voltages on the schematic and report back with a pic of the marked up schematic.
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Old 31st May 2012, 07:44 PM   #8
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Quote:
Originally Posted by Tiptoptommy View Post
Any good advice welcome .. I have a Nytech amp which has just blown the 3.15A slow fuse on the power supply board. From memory this can result from one of the power caps dying.. Replacing the fuse and it blows again.. so suspect the power cap(s)
The caps in question are 3300uf, 63V case size 35mm diameter, 30mm high, pins 10mm apart.
So I know that I dont know where to best find replacement parts for these and would appreciate the help to find some.
Alternatively, feel free to suggest alternative root causes. or just tell me to pay a pro to do the job for me.
Thanks in advance
Check the transistors or the recifiers (Dioden) ....I had the same with a 602.
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Old 31st May 2012, 07:45 PM   #9
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Originally Posted by Itsmee View Post
There is some info here, the Elna Silmic II are very nice.

Recapping of Nytech CPA 602 - pink fish media
I started this thread there
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Old 14th June 2012, 12:46 AM   #10
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Thanks to Andrew T and NRWler04 for support.
I hate to seem smug but my memory was right, one of the two caps on the power supply board had gone 'down'.. so I was lucky on two counts; firstly my recollection was good and fortunately the correct diagnoisis (aka hunch). Secondly, of the two Caps on the power supply board, I was lucky enough to pick the one that was 'down'.

Due to having four Nytech amps (tow active systems), and due to the cost of component postage, I opted to buy four Caps, and now have three spare from RS. Should get me through a month or fifty

Bye all. Hasta la nueva
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