2. amps-preamps
  3. 133023-103079

Audio Research VT100MKII power switch stuck on

So my Audio Research VT100MKII is stuck on! Switch rocks on and off but the amp stays on. Anybody else have this issue? Is there a fix without having to send back to ARC again?!! That was yesterday and it had been on since Sunday(had not realized til yesterday). Listened to music for a while last night with no problem and unplugged it afterwards. Now this morning I plugged it in to check it, the outlet sparked and the amp blew its fuse. Any ideas or input appreciated.
sgonzalez33
10 responses Add your response
sgonzalez33 OP
13 posts
 
Thanks all and especially jea48! To the shop it goes! Luckily I have my trusty D400MKII I can run until it's fixed!
jea48
4,451 posts
 
@donvito101,

The OP would end having the same results as when he tried plugging the amp directly into the wall outlet.


jea48
4,451 posts
 
@sgonzalez33,

I agree let a qualified tech fix it.



donvito101
278 posts
 
Use something like this until you get it fixed!
https://www.amazon.com/AmazonBasics-6-Outlet-Surge-Protector-Power/dp/B00TP1C51M/ref=sr_1_4?ie=UTF8&...
sgonzalez33 OP
13 posts
 
Jea48, seen that schematic. I'll let the shop deal with that. The power switch is one thing. The relay I will not touch.
jea48
4,451 posts
 
There is a relay RY1 contact that is in parallel with the power ON/Off  switch contact.
It appears the amp has a soft start up circuit. The main ON/OFF switch contact is in series with a 5 ohm resistor that helps limit start up inrush current.


sgonzalez33 OP
13 posts
 
Contacted AR about a new power switch and described the problem. They say it might be a relay stuck. Guess I'll be taking it to my local shop.
But thanks for the input!
wolf_garcia
6,708 posts
 
You simply have to sit there and listen to it until it stops…I don't see any other reasonable solution.
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