Measure the resistance from the gate leg of the hot transistor to the gate leg of an adjacent transistor. Do you read 200 ohms?
Place the probes on the legs as close to the body of the transistor as possible.
Place the probes on the legs as close to the body of the transistor as possible.
Remove the one that's heating up and clean the solder pads to ensure that there are no solder bridges. Power up the amp. Do the remaining 3 on that side heat up?
Does the amp still draw excessive current?
Does the amp still draw excessive current?
After the 200 ohms test i found bad junction at FET gate.
I solder it and now when i power on the amo it draws 440 mA and 11V
The power led doesn't turn on
I solder it and now when i power on the amo it draws 440 mA and 11V
The power led doesn't turn on
Very good news! The amp is working but the two rear channels doesnt sound normal. They are very low power and sounds that they can't produce all the frequencies . The front channels work perfect
Power led dosen't turn on
Power led dosen't turn on
Yes it was! Amplifier works perfect.
I don't know how to thank you You are the best.
Cheats
Best wishes
I don't know how to thank you You are the best.
Cheats
Best wishes
Thank you.
Without Perry i wouldn't have this amplifier alive
By the way does anybody know what brand, manufacturer of this amplifier ?
I have never heard before this brand
Maybe it is a clone from another brand ?
Without Perry i wouldn't have this amplifier alive
By the way does anybody know what brand, manufacturer of this amplifier ?
I have never heard before this brand
Maybe it is a clone from another brand ?
There are probably no more than 6 or 8 large build houses in China and Korea that make most all of the amps on the market so many amps have the same basic circuits and layout/look internally.
The exceptions (not a complete list) to the above statement are amps from Rockford, JL, MTX and those produced by the Japanese manufacturers (Kenwood, Alpine, Pioneer...).
The exceptions (not a complete list) to the above statement are amps from Rockford, JL, MTX and those produced by the Japanese manufacturers (Kenwood, Alpine, Pioneer...).
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