Insulating Washer for Naim poweramp

[Jia ren]

Hello, recently I've been rebuilding my nap110, and when I took off the transistor from the heatsinks, the insulating washer for the collector of the transistor fell off and broke apart. Now, the problem is that I want to find a suitable replacement for it and I don't know which brand or model is the most suitable for the naim. Thank you

 

[Pete MB&D]

Have a look for To3 insulator kits on eBay etc.

Pete

 

[Jia ren]

I'm in a country where I can't use eBay, the shipping is ridiculous, the sites that I use to buy parts is 14element and digikey (If i spend more than an amount for shipping).

 

[davidho]

Hello, recently I've been rebuilding my nap110, and when I took off the transistor from the heatsinks, the insulating washer for the collector of the transistor fell off and broke apart. Now, the problem is that I want to find a suitable replacement for it and I don't know which brand or model is the most suitable for the naim. Thank you

Picture are (is) needed, I may have it (not Naim parts) and mail to you .

 

[nobeone]

Like this? Or this? Should be able to get the same from element14.

 

[Jia ren]

This is the insulating washer that came with the amp

 

[MJS]

Unless the output devices are fried there's no need to remove these transistors. Naim used a custom made insert for those heatsinks (but yours looks different) and all its purpose is to stop the screw from touching the heatsink. A short section of silicone tubing would work just as well. You can use any mica TO3 washer but if you've taken it apart you should re-apply the thermal conducting compound.

 

[Jia ren]

I removed it to check all the transistor cuz the technician said the transformer is fried, but no way it is dead. So I looked more into the amp and checked the primary and secondary winding, it measured fine. Anyways, it is the feedbacks which is intermittent failure'd. Swapped it out and put the transistors back on with proper amount of compound and new micas.