Do any of you guys have the PC -0766-C schematics, I'm trying to figure out the power fets numbers the 2 pc boards I have they used IRFZ40 but they don't match this board.
Someone else may have the exact diagram.
I think you may mean the power 'supply' FETs (all of the TO-220 devices are 'power' FETs). I'd use IRF3205s with 47 ohm gate resistors.
I think you may mean the power 'supply' FETs (all of the TO-220 devices are 'power' FETs). I'd use IRF3205s with 47 ohm gate resistors.
What do you need to know that isn't in those diagrams?
Check with Rockford to see if they have the one you want.
Check with Rockford to see if they have the one you want.
Just want to be sure that somebody else just removed the D4 and D5 and they actually belong there.
They probably melted out of the board. If they're defective, I don't replace them. They are 1N5366Bs.
Good morning...update I replaced all the power supply FET's with IRF3205s with 47 ohm gate resistors, and the D4 and D5 with 1N5366B put it back together applied power and nothing happened, check TL494 pin 8,11 and 12 for voltage, but there is no voltage on these pins what should I check next?
Is the remote voltage go directly to these pins? because I checked voltage at the remote blade and I'm getting 13v ish, I'm going to trace it back just wondering if I need to check something else?
The solder connections/vias on the remote connector commonly fail.
It goes through a diode (D2 in your amp?) then to those terminals.
It goes through a diode (D2 in your amp?) then to those terminals.
It looks like it leaked as some of the components around are darker, I don't know the technical term sorry....
A description (like that one) is always better than using a term you're not sure is correct. It leaked electrolyte. This is a problem with these old amplifiers. The DSMs were the worst but these could have bad caps as well.
Did the leaked electrolyte corrode the trace and break the connection to the remote terminal?
Did the leaked electrolyte corrode the trace and break the connection to the remote terminal?
Do you know why the print call out for 10uf 35v but in reality, they used 10uf 16v? which one I should use?
The photos I have of a 766 board have 10@16. Either will work. They may have gone higher because the regulated 15v which also feeds that point can go slightly higher.
You may also want to confirm that the regulated 15v isn't excessively high.
I looked at the photos I have and it looks like the programming resistors for the regulators are going to produce ±18v. If that's the case with your amp, use a cap rated higher than 16v.
Did you try to get a 766 diagram from Rockford? If not, email them to see if it's available.
You may also want to confirm that the regulated 15v isn't excessively high.
I looked at the photos I have and it looks like the programming resistors for the regulators are going to produce ±18v. If that's the case with your amp, use a cap rated higher than 16v.
Did you try to get a 766 diagram from Rockford? If not, email them to see if it's available.