PPI PCX-2125

jomede · 2nd February 2012, 11:03 AM

Amplifier powers on but has distorted output when the volume is turned up? Nothing looks discolored or burned on the board. I did wiggle everything on the board and one of the 2 boards that is mounted verticle makes a clicking noise when moved. I checked for bad solder joints and nothing stands out. Any Ideas?

AKHeathen · 2nd February 2012, 11:11 AM

makes a clicking in the output? did you do a continuity check of the mounting connections. you can't always see it

jomede · 2nd February 2012, 02:43 PM

The clicking/pop is coming from the speakers when I wiggle the card.

Perry Babin · 2nd February 2012, 03:49 PM

If you resoldered the connections on the board, check where they connect to the ceramic board.If all is OK there...

With no power applied, measure the resistance for probes A and B in the following image. What do you read?

http://www.bcae1.com/temp/ppidriverb...roverlay01.swf

jomede · 3rd February 2012, 12:41 AM

Board 1 A=100.3 ohms
B=100.6 ohms

Board 2 A=100.4 ohms
B=100.4 ohms

Perry Babin · 3rd February 2012, 01:38 AM

Those are OK. Double-check the connections where the leads are soldered to the ceramic board. You'll have to use a lighted magnifying glass to see if any of the solder connections are cracked.

2nd February 2012, 11:03 AM	#1
jomede diyAudio Member Join Date: Jan 2012	PPI PCX-2125 Amplifier powers on but has distorted output when the volume is turned up? Nothing looks discolored or burned on the board. I did wiggle everything on the board and one of the 2 boards that is mounted verticle makes a clicking noise when moved. I checked for bad solder joints and nothing stands out. Any Ideas?

2nd February 2012, 03:49 PM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	If you resoldered the connections on the board, check where they connect to the ceramic board.If all is OK there... With no power applied, measure the resistance for probes A and B in the following image. What do you read? http://www.bcae1.com/temp/ppidriverb...roverlay01.swf __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

3rd February 2012, 01:38 AM	#6
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Those are OK. Double-check the connections where the leads are soldered to the ceramic board. You'll have to use a lighted magnifying glass to see if any of the solder connections are cracked. __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

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2nd February 2012, 11:11 AM	#2
AKHeathen diyAudio Member Join Date: Apr 2011 Location: Anchorage AK	makes a clicking in the output? did you do a continuity check of the mounting connections. you can't always see it

2nd February 2012, 02:43 PM	#3
jomede diyAudio Member Join Date: Jan 2012	The clicking/pop is coming from the speakers when I wiggle the card.

3rd February 2012, 12:41 AM	#5
jomede diyAudio Member Join Date: Jan 2012	Board 1 A=100.3 ohms B=100.6 ohms Board 2 A=100.4 ohms B=100.4 ohms

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