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Old 31st July 2007, 04:40 AM   #1
alltak is offline alltak  United States
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Join Date: Jul 2007
Question PPI 2125 repair?

Hello all.

I have a PPI PCX2125 that has worked very well for years but now it seems to have picked up a noise problem on the right channel. It sounds just like a bad connection, never increasing or decreasing with the volume. In fact, it is there with the inputs disconnected.

Connected it with out the crossovers and switched sides and it remains on the right channel. It does it about 70% of the time.

Pulled off the bottom plate and could not see anything that was visibly damaged. Wiggled all the connections, but no change

I have a DMM but I would not know where to begin. Especially since the noise is not there all the time.

Does anyone know of a reputable repair shop in the Dallas area? I can also ship it if it comes to that.

I need the same amp to fit in the space I have and have been unsuccessful finding a "trustworthy" one on the web.

Thank you for your help

Alltak
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Old 31st July 2007, 09:28 AM   #2
diyAudio Member
 
Join Date: Dec 2005
Location: Northern California
Well something has gone south on you. A pic of the inside would be nice if possible. It sounds like you might have power supply noise issues, perhaps a shorted bypass cap, seen that a few times in PPI's over the years.

If your not use to working inside these types of devices then your idea of getting it repaired by outside help is a good one.

I am located in the SF bay area, so that might be a bit far for your desires. There are others here online closer to you. I will wait and see if they chime in and offer help. If not e-mail me and I will see what I can do for you. I have a few years inside PPI's I used to be a big fan of theres way back, and I still own a PC-2350 or two and a PC-4100. I can't bring myself to sell them
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Old 1st August 2007, 03:27 AM   #3
alltak is offline alltak  United States
diyAudio Member
 
Join Date: Jul 2007
I took it apart again and checked all the components closely. Other than a little solder flux around R281, everthing looks good. Not sure if that is the right channel or not. It looks like a bad solder joint, so I will resolder that and see how it goes.

When I get my camera, I will post a pic.

Thanks for your help.

Alltak
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