help with dead Klipsch ProMedia 2.1

grjr · 2nd October 2007, 06:18 AM

I hope this is the right place to post this. If not, sorry I'm new

I have a dead Klipsch ProMedia 2.1 that I'd like to get working again. Haven't done any troubleshooting yet because there are a couple of resistors that are charred. I'd like to know what their values are suppose to be before I start working on this thing. I have a picture of the resistors on the power supply PCB here:

http://picasaweb.google.com/grjr2000...10765367966242

you can zoom in to see the location of the two burned resistors, I assume they are probably the same value. If anyone could help identify what value they are suppose to be I'd be really grateful

gni · 3rd October 2007, 03:39 PM

There is probably another cause for the resistors to be that
badly burnt. Short somewhere else in the circuit. . .short
at speaker connection. . . you will need to think of what was
happening when this occured to prevent it again and fix what
ever else is malfuncting.

Someone will have the same unit and open it up. . .there is hope.

grjr · 3rd October 2007, 11:00 PM

Yes, I know there is something wrong somewhere, would just like to know the value of the resistors

gni · 3rd October 2007, 11:21 PM

It is possible that if you pull them. . .the bottom might not
be as blackened. . .less exposure to oxygen when it overheated.

Give it a try. . .

djk · 4th October 2007, 01:46 AM

Call Klipsch and have them send you the schematic.

gni · 4th October 2007, 07:56 PM

I hope Klipsch will send the schematic. . . they can be helpful. . .I was looking at a purchase of some old Cornwalls. . . they gave some
great advice on what to look for. . .

SamGreen · 6th July 2009, 02:04 PM

I just had and repaired the same problem. Those two resistors are 82 ohms and are in the power supply for the control pod under one of the satellite speakers. They burned because something in the control pod is shorted. In my case it was a pair of transistors Q502, a 2N3904, and Q504, a 2N3906. Replace the burned resistors and figure out which transistors are shorted in the control pod and replace them. The schematics are helpfully provided by Dale Thompson at:

http://www.thompdale.com/bash_amplif...1_bash_amp.htm

Thank you Dale Thompson. Cheers

gni · 19th July 2009, 04:57 AM

The schematic is always the best place to start. . . glad you were able
to get it and make the repairs. . . one less electronic land fill.

Evan Shultz · 6th August 2009, 03:48 AM

Quote:

Originally posted by SamGreen
The schematics are helpfully provided by Dale Thompson at:

http://www.thompdale.com/bash_amplif...1_bash_amp.htm

Thank you Dale Thompson. Cheers

Glad you got it working again! That's the whole reason I made the schematics

warpkari · 23rd February 2010, 12:56 PM

Hi,

I got a set of these (Klipsch ProMedia 2.1) from the USA but I am in the UK so I was wondering whether it would be possible to change the internal power supply instead of using a step down converter.

What would you guys recommend?

2nd October 2007, 06:18 AM	#1
grjr diyAudio Member Join Date: Sep 2007	help with dead Klipsch ProMedia 2.1 I hope this is the right place to post this. If not, sorry I'm new I have a dead Klipsch ProMedia 2.1 that I'd like to get working again. Haven't done any troubleshooting yet because there are a couple of resistors that are charred. I'd like to know what their values are suppose to be before I start working on this thing. I have a picture of the resistors on the power supply PCB here: http://picasaweb.google.com/grjr2000...10765367966242 you can zoom in to see the location of the two burned resistors, I assume they are probably the same value. If anyone could help identify what value they are suppose to be I'd be really grateful

4th October 2007, 01:46 AM	#5
djk diyAudio Member Join Date: Feb 2001 Location: USA	Call Klipsch and have them send you the schematic. __________________ Candidates for the Darwin Award should not read this author.

6th July 2009, 02:04 PM	#7
SamGreen diyAudio Member Join Date: Jul 2009	solution I just had and repaired the same problem. Those two resistors are 82 ohms and are in the power supply for the control pod under one of the satellite speakers. They burned because something in the control pod is shorted. In my case it was a pair of transistors Q502, a 2N3904, and Q504, a 2N3906. Replace the burned resistors and figure out which transistors are shorted in the control pod and replace them. The schematics are helpfully provided by Dale Thompson at: http://www.thompdale.com/bash_amplif...1_bash_amp.htm Thank you Dale Thompson. Cheers

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3rd October 2007, 03:39 PM	#2
gni diyAudio Member Join Date: Sep 2006	There is probably another cause for the resistors to be that badly burnt. Short somewhere else in the circuit. . .short at speaker connection. . . you will need to think of what was happening when this occured to prevent it again and fix what ever else is malfuncting. Someone will have the same unit and open it up. . .there is hope.

3rd October 2007, 11:00 PM	#3
grjr diyAudio Member Join Date: Sep 2007	Yes, I know there is something wrong somewhere, would just like to know the value of the resistors

3rd October 2007, 11:21 PM	#4
gni diyAudio Member Join Date: Sep 2006	It is possible that if you pull them. . .the bottom might not be as blackened. . .less exposure to oxygen when it overheated. Give it a try. . .

4th October 2007, 07:56 PM	#6
gni diyAudio Member Join Date: Sep 2006	I hope Klipsch will send the schematic. . . they can be helpful. . .I was looking at a purchase of some old Cornwalls. . . they gave some great advice on what to look for. . .

19th July 2009, 04:57 AM	#8
gni diyAudio Member Join Date: Sep 2006	The schematic is always the best place to start. . . glad you were able to get it and make the repairs. . . one less electronic land fill.

23rd February 2010, 12:56 PM	#10
warpkari diyAudio Member Join Date: Feb 2010	Hi, I got a set of these (Klipsch ProMedia 2.1) from the USA but I am in the UK so I was wondering whether it would be possible to change the internal power supply instead of using a step down converter. What would you guys recommend?

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