Alpine MRV-1002

caraudioguy2100 · 13th August 2010, 05:30 PM

I got this amp from a friend. The fuse holder looks like it has gotten hot at 1 point.

I reflowed the solder on the fuse holders and tryed powering it up.

The amp will draw excessive current.

So i checked the power supply fets and the output transistors. All test good.

So wondering what i check now since the amp draws excessive current?

brandes.cm · 13th August 2010, 06:49 PM

Is B+ shorted to gnd? Solder short from the repair on the fuse holder?

Perry Babin · 13th August 2010, 08:30 PM

Does it draw excessive current without remote voltage applied?

caraudioguy2100 · 13th August 2010, 09:44 PM

It only draws excessive current when the remote is applied

Cal Weldon · 13th August 2010, 09:54 PM

caraudioguy, you need post only once. While you are under moderation, it sometimes takes a while before someone clears the queue. Patience my friend.

Perry Babin · 13th August 2010, 10:41 PM

Is it blowing only one of the on-board fuses or is it blowing both of them?

13th August 2010, 05:30 PM	#1
caraudioguy2100 diyAudio Member Join Date: Aug 2010	Alpine MRV-1002 I got this amp from a friend. The fuse holder looks like it has gotten hot at 1 point. I reflowed the solder on the fuse holders and tryed powering it up. The amp will draw excessive current. So i checked the power supply fets and the output transistors. All test good. So wondering what i check now since the amp draws excessive current?

13th August 2010, 08:30 PM	#3
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Does it draw excessive current without remote voltage applied? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

13th August 2010, 09:54 PM	#5
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	caraudioguy, you need post only once. While you are under moderation, it sometimes takes a while before someone clears the queue. Patience my friend. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

13th August 2010, 10:41 PM	#6
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Is it blowing only one of the on-board fuses or is it blowing both of them? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

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13th August 2010, 06:49 PM	#2
brandes.cm diyAudio Member Join Date: Sep 2009 Location: Wisconsin	Is B+ shorted to gnd? Solder short from the repair on the fuse holder?

13th August 2010, 09:44 PM	#4
caraudioguy2100 diyAudio Member Join Date: Aug 2010	It only draws excessive current when the remote is applied

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