PPI 350DM problem

mclsound · 28th April 2012, 10:41 PM

I just got my PPI dream amp and when I try and power it up on my test bench,it will only turn on once(will not turn on after you shut it off) and has a rythmatic clicking/popping sound with no sound and the low impedence/bridging light is on.This is very depressing of course.I checked a Orion and all is well on the test bench area.Any PPI experts here.
thanks john

Perry Babin · 28th April 2012, 10:58 PM

Did you mean 2350DM?

Have you checked the output transistors?

mclsound · 29th April 2012, 12:00 AM

Darn..that is what I meant..2350

mclsound · 29th April 2012, 12:03 AM

No
I just got it and took the end cap and bottom cover off but this is no Orion to get at.

Perry Babin · 29th April 2012, 02:38 AM

I've only worked on one that I can remember and from what I remember, the mechanical design could have been better.

Don't attempt to power it up unless you have the transistors clamped tightly to the heatsink.

If you haven't don't so, read the basic amp repair page, particularly the information in the yellow box near the top of the page.

mclsound · 30th April 2012, 06:31 AM

This one may need a good doctor as I dont have the time for it and would rather someone experienced get it back to new

28th April 2012, 10:41 PM	#1
mclsound diyAudio Member Join Date: Sep 2007	PPI 350DM problem I just got my PPI dream amp and when I try and power it up on my test bench,it will only turn on once(will not turn on after you shut it off) and has a rythmatic clicking/popping sound with no sound and the low impedence/bridging light is on.This is very depressing of course.I checked a Orion and all is well on the test bench area.Any PPI experts here. thanks john __________________ thanks John

28th April 2012, 10:58 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Did you mean 2350DM? Have you checked the output transistors? __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

29th April 2012, 12:00 AM	#3
mclsound diyAudio Member Join Date: Sep 2007	Darn..that is what I meant..2350 __________________ thanks John

29th April 2012, 12:03 AM	#4
mclsound diyAudio Member Join Date: Sep 2007	No I just got it and took the end cap and bottom cover off but this is no Orion to get at. __________________ thanks John

29th April 2012, 02:38 AM	#5
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	I've only worked on one that I can remember and from what I remember, the mechanical design could have been better. Don't attempt to power it up unless you have the transistors clamped tightly to the heatsink. If you haven't don't so, read the basic amp repair page, particularly the information in the yellow box near the top of the page. __________________ 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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30th April 2012, 06:31 AM	#6
mclsound diyAudio Member Join Date: Sep 2007	This one may need a good doctor as I dont have the time for it and would rather someone experienced get it back to new __________________ thanks John

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