Can this Rockford amp be fixed? - diyAudio
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Old 24th October 2009, 11:49 PM   #1
chipper is offline chipper  United States
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Default Can this Rockford amp be fixed?

It has a blown imput circuit. I won this on Ebay for the end caps and bottom cover. I was gonna use it as a wall hanger but maybe its repairable? Oh yeah the back of the board is kinda burnt too. This this thing fried pretty bad!

LMK

Thanks!
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Old 24th October 2009, 11:59 PM   #2
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Is this a 60ix?

You need to clean the board top and bottom with acetone and a toothbrush so you can better see the extent of the damage.
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Old 25th October 2009, 12:05 AM   #3
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NWR-not worth repair.. I would buy it for parts though!
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Old 25th October 2009, 12:44 AM   #4
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Holy.. what would cause such extensive damage to the input section? Did someone 'wall socket' it or something?
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Old 25th October 2009, 01:32 AM   #5
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These are from a 40x2.

http://www.bcae1.com/temp/punch40x2/IMG_2211.JPG
http://www.bcae1.com/temp/punch40x2/IMG_2213.JPG
http://www.bcae1.com/temp/punch40x2/IMG_2216.JPG

According to a friend who was watching the auction, they allowed 12v to contact the RCA jacks (<< second hand information).

Last edited by Perry Babin; 25th October 2009 at 01:42 AM.
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Old 25th October 2009, 03:14 AM   #6
chipper is offline chipper  United States
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Quote:
Originally Posted by Perry Babin View Post
Is this a 60ix?

You need to clean the board top and bottom with acetone and a toothbrush so you can better see the extent of the damage.

No, its a Punch 55.2.

Do you know whereto get that?? Thanks for the reply!
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Old 25th October 2009, 03:16 AM   #7
chipper is offline chipper  United States
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Quote:
Originally Posted by Perry Babin View Post
These are from a 40x2.

http://www.bcae1.com/temp/punch40x2/IMG_2211.JPG
http://www.bcae1.com/temp/punch40x2/IMG_2213.JPG
http://www.bcae1.com/temp/punch40x2/IMG_2216.JPG

According to a friend who was watching the auction, they allowed 12v to contact the RCA jacks (<< second hand information).
Yeahs that exactly what happend to this poor little amp ): So do you know if its repairable? Thanks Perry
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Old 25th October 2009, 03:22 AM   #8
chipper is offline chipper  United States
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Quote:
Originally Posted by Perry Babin View Post
These are from a 40x2.

http://www.bcae1.com/temp/punch40x2/IMG_2211.JPG
http://www.bcae1.com/temp/punch40x2/IMG_2213.JPG
http://www.bcae1.com/temp/punch40x2/IMG_2216.JPG

According to a friend who was watching the auction, they allowed 12v to contact the RCA jacks (<< second hand information).
One more thing. Do you happen to have a Punch 55.2? Maybe i can locate these parts and try to repair it. And is it hard to install the small surface mount pieces? Like, resistors, ICs, caps?? Thanks again Perry Babin for the help!
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Old 25th October 2009, 03:31 AM   #9
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There may be no defective components (except possibly the diode that connects the RCA shield to the chassis ground - D7, behind the treble pot in the 40x2). You may only need to cut out the carbonized fiberglass and jump the traces on the bottom.

I don't have a 55.2. I borrowed the 40x2 from a friend.

It's not difficult to replace the SMD parts.

Are you asking where to get acetone? Any hardware store. Even walmart has it in the home paint section. If you use a toothbrush, don't use one that's transparent. The acetone will melt it. Use the acetone outside and let it evaporate completely before bringing it back indoors. It's extremely flammable. Don't let it drip onto any plastic material. It will likely melt it.
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Old 25th October 2009, 03:58 AM   #10
Luke is offline Luke  New Zealand
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dont bother, a second hand one will be less than the parts ime.
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