memphis pr200.2 problem

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monitor2

Member - Posts: 14

Joined: January 30, 2011

Posted: January 30, 2011 at 5:02 PM / IP Logged

Hi im a new member and i need help my neighbor gave me this amp to start off my system he said it might or might not work because it didnt a while back but i tried it and its still doing the same thang when i turn it on it Goes into protect. It goes off protect when gain is turned all the way down. any help is appreciated.

i am an idiot

Platinum - Posts: 13,670

This member consistently provides reliable information

Joined: September 21, 2006

Location: Louisiana, United States

Posted: January 30, 2011 at 5:07 PM / IP Logged

The amp has one or more shorted output transistors. Connect only the power, ground and the remote turn on wires. If it still has this problem, it will be a simple repair.

monitor2

Member - Posts: 14

Joined: January 30, 2011

Posted: January 30, 2011 at 5:10 PM / IP Logged

thnak you i will check this out in a little bit

monitor2

Member - Posts: 14

Joined: January 30, 2011

Posted: January 30, 2011 at 7:52 PM / IP Logged

I checked inside my amp there is a white rectangle thing two of the three connections were not connected by solder what is that and could that be my problem

i am an idiot

Platinum - Posts: 13,670

Joined: September 21, 2006

Location: Louisiana, United States

Posted: January 30, 2011 at 8:13 PM / IP Logged

Yes that could be your problem. That problem only shows up if you run signal into the amp. That is why I wanted you to connect only power ground and remote to see if it still did the same thing. Reconnect the connections and see what happens.

The device is the emitter resistor. There are 2 resistors in that one case.

memphis pr200.2 problem -- posted image.

This is not the value of your resistor. This is only to confirm that we are talking about the same part.

monitor2

Member - Posts: 14

Joined: January 30, 2011

Posted: January 30, 2011 at 8:14 PM / IP Logged

ok i will try that i was about to post picture thank you

monitor2

Member - Posts: 14

Joined: January 30, 2011

Posted: January 30, 2011 at 8:38 PM / IP Logged

Do you know where i can buy one of these

i am an idiot

Platinum - Posts: 13,670

Joined: September 21, 2006

Location: Louisiana, United States

Posted: January 31, 2011 at 9:15 PM / IP Logged

What is the value of the one in your amp? .1, .22, .33Ohm?

monitor2

Member - Posts: 14

Joined: January 30, 2011

Posted: January 31, 2011 at 10:21 PM / IP Logged

.15 Ohm

monitor2

Member - Posts: 14

Joined: January 30, 2011

Posted: February 05, 2011 at 5:23 PM / IP Logged

This came out of a Memphis Pr 200.2

memphis pr200.2 problem -- posted image.

I was told it was an emitter resistor but not sure. Also would like to know the place i can get another if possible.

Sorry the picture is bad quality the writing on it is:

MPR 55F

0.15ÙKX2

DAE LIM

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