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-   -   Rockford fosgate 800A2 (http://www.diyaudio.com/forums/car-audio/190502-rockford-fosgate-800a2.html)

mike49504 8th June 2011 06:05 PM

Rockford fosgate 800A2
 
I got this amp in for repair first problem i noticed is the amp wont power up..

Here what i have on the TL494

PIN1:0
PIN2:4.76
PIN3:0.06
PIN4:4.87
PIN5:1.48
PIN6:3.29
PIN7:0
PIN8:13.21
PIN9:0
PIN10:0
PIN11:13.21
PIN12:13.21
PIN13:4.91
PIN14:4.91
PIN15:4.91
PIN16:0

Perry Babin 8th June 2011 06:51 PM

Pin 4 is being driven high. Post the DC voltage on the 339.

Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
Pin 9:
Pin 10:
Pin 11:
Pin 12:
Pin 13:
Pin 14:

mike49504 8th June 2011 07:57 PM

Pin 1: 0
Pin 2: 1.28
Pin 3: 13.22
Pin 4: 0.4
Pin 5: 2.31
Pin 6: 4.91
Pin 7: 1.75
Pin 8: 4.34
Pin 9: 4.91
Pin 10: 4.91
Pin 11: 8.22
Pin 12: 0
Pin 13: 1.28
Pin 14: 1.28

Perry Babin 8th June 2011 08:20 PM

Is this PC-2360 or PC-3092?

If not, what is it?

Is Q9 leaking or shorted?

mike49504 8th June 2011 08:38 PM

Its another one of theese amps that i cant find a schematic for..

Board is marked PC-2038-G

Perry Babin 8th June 2011 08:47 PM

Email Rockford for a copy of the schematic diagram and send me a copy.

Did you check Q9?

mike49504 8th June 2011 08:56 PM

Replaced Q9 and the amp powers up but draws excessive current

mike49504 8th June 2011 09:11 PM

Sent

mike49504 8th June 2011 09:16 PM

So can i lift the legs of the STRP15's to see if the current draw is from the power supply or output section?

Perry Babin 8th June 2011 09:31 PM

Is the diagram you sent the one Rockford sent you? It's not the same board number.

Connect only remote and ground. What do the pulses on the power supply FET gates look like?


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