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no name amp
1 Attachment(s)
im working on a few of these Chinese made amps im looking for the output drivers on this card. or seeing if anyone know a similar board.
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Are they not the six transistors on each end, just like the DWM3640 that has 8 per side.
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yea but the number sanded off.
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I stated the wrong board, D1820 driver board uses transistors marked DK and AC.
Check the 470 ohm resistors, all of them usually are out of tolerance. |
thanks here is the amp...all i can find on it.
Monoblock High Power Class D Amplifier By Ronfa Electronic, China |
ok on another board the same amp. the amp is dead all i have is the gate voltage in the power supply. i think the 494 is bad.
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Do you have the square wave on the gate or DC voltage?
What are the other pins doing? |
no there is no wave on at the gate. here's the pins.
0.0 0.0 0.0 .0.4 0.0 0.0 0.0 12.72 0.0 0.0 12.73 12.70 0.0 0.0 0.0 0.0 |
1 Attachment(s)
the amp dont have a name
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1 Attachment(s)
Compare it to the following board.
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