Hi Perry,
I got this amp with a very blown power supply and one side on outputs (IRF1310N) shorted.
I removed all the fets, checked the psu drives/gate resistors, then installed new irf3205's. I installed a new HIP4080, I'm only getting drive waves on Q5,6,7 and Q20,21,22. there are no output fets in the board
Pics:
I got this amp with a very blown power supply and one side on outputs (IRF1310N) shorted.
I removed all the fets, checked the psu drives/gate resistors, then installed new irf3205's. I installed a new HIP4080, I'm only getting drive waves on Q5,6,7 and Q20,21,22. there are no output fets in the board
Pics:
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Last edited:
Find the outputs that have their source leg connected to ground (probably the ones with signal). There will be 3 on each side. For one of those on each side, bridge the drains and source legs. Does that allow you to see the signal on the high side?
Post a close-up photo and indicate which resistor.
Are there any solder bridges other than the ones you made to test the drive?
Are there any solder bridges other than the ones you made to test the drive?
none that i can see
An externally hosted image should be here but it was not working when we last tested it.
on these marked in red, signal was here before creating the solder bridge
An externally hosted image should be here but it was not working when we last tested it.
1. Did those have leg 3 grounded?
2. Did you bridge legs 2 and 3 on one in each of those groups?
3. Are both of the large 1 ohm resistors heating the same?
4. Was this 4080 ever in the circuit with a damaged output?
2. Did you bridge legs 2 and 3 on one in each of those groups?
3. Are both of the large 1 ohm resistors heating the same?
4. Was this 4080 ever in the circuit with a damaged output?
1. Yes
2. Yes
3. Not sure, removed remote when it smoked
4. No, no outputs were installed when I replaced it.
2. Yes
3. Not sure, removed remote when it smoked
4. No, no outputs were installed when I replaced it.
Both large 1 ohm resistors serve the same purpose and connect to identical circuits. Why did only one smoke?
i think i may have damaged the HIP4080, i discovered a small solder bridge on one of the other banks
resistor values:
An externally hosted image should be here but it was not working when we last tested it.
They are fragile. The best you can do is to check all connected components and make sure that you don't have any solder bridges.
If this amp powers the 4080 through a regulator, make sure that the output voltage is pretty close to 12v.
If this amp powers the 4080 through a regulator, make sure that the output voltage is pretty close to 12v.