2. amps-preamps
  3. 1432134647

Parasound Halo A52 keeps shutting off / protection

Hi guys, I hope someone could shed some light on this before I take it in for repair. I have a Parasound Halo A52 that's been running great driving a pair of Martin Logan Theos. Recently the amp suddenly started going into protection mode / shuts off in the middle of listening. I checked everything, wires are not short, and settings are correct. I spoke to someone at Chicago Audio who told me that the caps may need to be replaced. While this is not an issue, i just want to make sure that this issue is common and I won't end up spending money and not be able to fix it.

One thing I should mention is I am using RCA terminals on the preamp side and XLR connectors on the amp side. Could that be the problem? Should I try using just a simple RCA cable to see if the problem goes away?

Thanks to all.
angelgz2
theduke
372 posts
 
Before you bring it in for repair, try the straight RCA hook-up. I've had problems using a XLR to RCA configuration. For some reason this XLR/RCA caused my Benchmark DAC1 to overheat and fail.
coli
291 posts
 
there's a thermal protection circuit that needs to be replaced. Don't send it to Parasound, they charge an arm and a leg for that work.
zd542
5,339 posts
 
How many channels are you using for the speakers, 2 or 4?
angelgz2 OP
43 posts
 
Hi thanks for the advice. I'm using all 5 Channel, the MLs are bi wired plus an extra sub. I have an external fan and when I touch the unit it's not very hot. For some reason one side does feel hotter than the other.
dweller's avatar
dweller
3,820 posts
 
First thing to do is check connections at the speaker terminals on your amp. If any connector (bare wire, spade, whatever) is touching an adjacent one, this will cause a short. First things first...
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