Amp protection lights on

P

PWRmx24

Audioholic Intern
My old faithful Rotel RMB-1095 (5 ch 200w) amp has two saftey protection lights on that won't go out. I turned it on and off a couple of times and disconnected the speaker wires but the lights are still on. The other 3 channels work fine. Any ideas what to do next, other than take it in for service?
 
TLS Guy

TLS Guy

Seriously, I have no life.
My old faithful Rotel RMB-1095 (5 ch 200w) amp has two saftey protection lights on that won't go out. I turned it on and off a couple of times and disconnected the speaker wires but the lights are still on. The other 3 channels work fine. Any ideas what to do next, other than take it in for service?
It needs service. Most likely power transistors have failed. I would not use it with protection lights on. Leave it unplugged. The problem is that there are no service guys left. So if you don’t have the test equipment and experience with servicing complex electronics, your options are likely limited.
 
TLS Guy

TLS Guy

Seriously, I have no life.
My old faithful Rotel RMB-1095 (5 ch 200w) amp has two saftey protection lights on that won't go out. I turned it on and off a couple of times and disconnected the speaker wires but the lights are still on. The other 3 channels work fine. Any ideas what to do next, other than take it in for service?
Rotel are better organized than most manufacturers. They have eight authorized service center in the You can find them on the Rotel site.

I have a friend who lives nearby that has one of those amps. It also has at least one channel failed and the protection light on. I would service it for him, but I can't lift it. This units weigh 100 lb. I have researched them and the final driver stage is an IC, which was probably a mistake. It is on a heat sink which makes it a tricky repair. This is a common failure with those and it takes down the output transistors pretty much every time. Cost of repair seems to be about $200.00 per channel.

The problem as I see it is that all the channels will likely fail, so to service all channels you are looking at about $1000.00 and up. So it is up to you to consider recycling, selling for parts or repair, or sending to a service center. At 100 lb weight shipping to and fro will be significant unless you are in driving distance of a service center.
 
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