Old alpine v12

bluetjjason · 23rd February 2011, 08:19 PM

I have an older MRV-F357 alpine that has finally gone. i was hoping to find a service manual. I have searched all over and can't seem to locate any help. can anyone point me to a schematic/manual for this model?

Perry Babin · 23rd February 2011, 09:49 PM

email me.

babin_perry@yahoo.com

bluetjjason · 11th March 2011, 08:33 PM

So after a little troubleshooting. there is no voltage across the rails.. and the design of this amp puts the pwm ic underneath the circuit board.
I am reluctant to remover all the fet screws and stuff to get to the ic

is there a better test point on the top of the pcb where i can see if the ic is bad?

I have only located 2 burned components and they seem to be in the sub/ch5 output section.

Perry Babin · 11th March 2011, 09:27 PM

You don't have to take out the individual screws. You take out 3-4 screws that hold the riser plates (the ones the transistors are clamped to) down to the heatsink.

23rd February 2011, 08:19 PM	#1
bluetjjason diyAudio Member Join Date: Feb 2011	Old alpine v12 I have an older MRV-F357 alpine that has finally gone. i was hoping to find a service manual. I have searched all over and can't seem to locate any help. can anyone point me to a schematic/manual for this model?

23rd February 2011, 09:49 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	email me. babin_perry@yahoo.com __________________ 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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11th March 2011, 08:33 PM	#3
bluetjjason diyAudio Member Join Date: Feb 2011	So after a little troubleshooting. there is no voltage across the rails.. and the design of this amp puts the pwm ic underneath the circuit board. I am reluctant to remover all the fet screws and stuff to get to the ic is there a better test point on the top of the pcb where i can see if the ic is bad? I have only located 2 burned components and they seem to be in the sub/ch5 output section.

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