My Amp is Broken - Not Sure What to Do - Any Recommendations?


I went to turn on my Audio Research SD135 amplifier the other day, but it will not turn on. According to the Audio Research service technician I spoke to, the problem is a broken Thermal Trak module chip. He said that it is a temperature sensing component, and that replacements are no longer being manufactured. He said that it is a known problem, and that Audio Research will give me credit to purchase an Audio Research amplifier from an Audio Research authorized dealer. 

I was wondering if Audio Research makes anything powerful enough to drive Vandersteen 3A Signature speakers (which need between 100 - 200 watts of power)? I am using an Audio Research SP8 Mk II as a pre-amp.

I don't really have much of a budget and am not sure what to do. I would appreciate any advice. Thank you.
distortions
Ralph the OP was referring to thermaltrak output chips made by OnSemi.  Can’t be bypassed.  They were discontinued for a while. Now back in
the market.  
grannyring4,348 posts10-14-2018 1:28pmA good tech/modifier could fix this amp. You simply need a new way of handling the protection circuit in your amp. No way your amp is now trash. Are you near any good tube amp builders or techs?
+1
This is AR b***s**t, of course this can be repaired by a competent tech in an alternative way. AR just want you to buy a new one. As grannyring said find a competent tech and get it fixed.

Cheers George 
Contact Jeff Jackson at lktrnx@gmail.com. He's a great guy and will give you the straight scoop on realistic options. 

Good luck! 
Here’s the problem with ThermalTrak devices that supposedly was solve by Ayre but not AR https://www.stereophile.com/solidpoweramps/407ayre/index.html
ON Semi only made 1 set of thermaltraks, and yes I just confirmed that Mouser has them in stock.
By the way the SD135s are only 10 years old.