Rockford-Fosgate Punch 500M

[RockfordFIx]

Currently have a power 500m that will not power on. I recapped the amplifier and replaced 1 shorted irf640 output and 0.1 power resistor. I replaced the TL494c becuase with only ground and remote wire connected i did not see 5v on the irfz40 powersupply fets. Also do not see at voltage on the thermistor.

 

[Perry Babin]

PC board number?

Do you now have 5v on pin 14?

 

[RockfordFIx]

PC-0776-E

 

[Perry Babin]

Do you now have 5v on pin 14?

 

[RockfordFIx]

It appears I have no voltage on VCC (pin 12) or pin 14

 

[Perry Babin]

Do you have 12v on both terminals of D3?

 

[RockfordFIx]

No voltage on D3

 

[RockfordFIx]

D4 and D5 have 14 v across them

 

[Perry Babin]

Is the connection on the remote terminal broken?

 

[RockfordFIx]

FML the trace was cracker broke at the pass through

 

[RockfordFIx]

I added some solder for temporary

 

[RockfordFIx]

Problem solved, will beef that conection up

 

[Perry Babin]

If you have the tutorial, the puncholderamprepairnotes.htm page has several solutions.