I don't think that those are drivers.
Follow the traces on the main board leading up to E1 and E2 on the driver board and confirm that you read 0 ohms between those traces and the terminals on the driver board.
Follow the traces on the main board leading up to E1 and E2 on the driver board and confirm that you read 0 ohms between those traces and the terminals on the driver board.
I followed the driver board E1 and E2, but missed the connect.
I think have a faultly junction, and connect directly driver board terminals to resistors.
Now, very hot the fets.
Probably came out of the original problem which makes it burned...
I think have a faultly junction, and connect directly driver board terminals to resistors.
Now, very hot the fets.
Probably came out of the original problem which makes it burned...
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.
At the driver board, for pins E1 and E2, what is the resistance from the top solder pad to the bottom solder pad for both E1 and E2?
From the top side of the board for E1 and E2, what is the resistance to the gate resistors on both sides of the amp?
One of the resistors near the FETs appears to have a cracked solder joint. Check all in the area carefully.
From the top side of the board for E1 and E2, what is the resistance to the gate resistors on both sides of the amp?
One of the resistors near the FETs appears to have a cracked solder joint. Check all in the area carefully.
1. 0.8 - 0.8 ohms
2. break
I was solder two wire directly from E1 and E2 to gate resistors, but 6 fet heating (E1 circuit)
Fets immediately heating. I think a short circuit.
2. break
I was solder two wire directly from E1 and E2 to gate resistors, but 6 fet heating (E1 circuit)
Fets immediately heating. I think a short circuit.
If you read the same resistance from E1 to all of the gate resistors that it drives as you do for E2 and all of the gate resistors that it drives, the problem is likely on the driver board.
I'm assuming that you've confirmed that there are no solder bridges on the FETs.
If you have a current limiter or if the FETs heat up slowly enough, check the drive signal at the gate legs of the FETs to confirm that all FETs have the same drive signal.
I'm assuming that you've confirmed that there are no solder bridges on the FETs.
If you have a current limiter or if the FETs heat up slowly enough, check the drive signal at the gate legs of the FETs to confirm that all FETs have the same drive signal.
I thought the six fet's short circuit between gates and drains, because 80ohms the resistance the legs. Another six fet is 0.
Now, I replace this components.
Power supply:
IRF1010E all
driver board transistors and lm293
Amplifier:
IRFP250N all
driver board 1D and 2Ds and all ICs.
Two suppressor diode and 1ohm 2w resistor.
The amp is working and hear the music, but faint low-frequency signal beeps sits and reviews about the speaker crackle quarter volume. The low frequency signal strength does not change.
Is this op-amp problem?
http://www.youtube.com/watch?v=sWmw9deZyx8
Power supply:
IRF1010E all
driver board transistors and lm293
Amplifier:
IRFP250N all
driver board 1D and 2Ds and all ICs.
Two suppressor diode and 1ohm 2w resistor.
The amp is working and hear the music, but faint low-frequency signal beeps sits and reviews about the speaker crackle quarter volume. The low frequency signal strength does not change.
Is this op-amp problem?
http://www.youtube.com/watch?v=sWmw9deZyx8
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So far Ive found that this driver card is used in at least 4 amps, this amp, the brutus 4000d ,the kicker ex2000 and lightning audio la1000md, ive been trying to hunt down schematics and spare driver boards, no luck yet.
I have made a mistake, the driver card i was refering to was the PS driver board not the output board.. sorry about that.
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