thank you Mr. Perry, I will see if I can not find who sells it in my village ... will there be a replacement?
Mr. Perry I already got the transistor, thanks for the info but I have more problems the amplifier is in protection and I have the amplification stage out of the board, already check the PS fets and they are in good condition I realize that pin 3 of the 494 is higher, I don't know what is causing it, I see that the voltage of pin 1 is higher than 2 But I can't discover the cause, what else should I check?
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Thanks
Now the part of Ps has already been solved, but now in the output stage the board has too many problems sorry for focusing on the foreground only to the PS stage but apparently this amplifier has a monstrous disorder, on the output driver board fast the resistors flew 8,34,35,26 and the D1 so when they turned on they flew, it remains to replace them and investigate the root cause and in the case of diode 1 which one did he place? what model?
Now the part of Ps has already been solved, but now in the output stage the board has too many problems sorry for focusing on the foreground only to the PS stage but apparently this amplifier has a monstrous disorder, on the output driver board fast the resistors flew 8,34,35,26 and the D1 so when they turned on they flew, it remains to replace them and investigate the root cause and in the case of diode 1 which one did he place? what model?
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That's not the model number for the board. The attached diagram is for the 1200 board.
I'd suggest only replacing the two transistors indicated by the yellow square.
The op-amps sometimes (rarely) fail so you can order them.
The power supply and output boards are not necessarily used together.
I'd suggest only replacing the two transistors indicated by the yellow square.
The op-amps sometimes (rarely) fail so you can order them.
The power supply and output boards are not necessarily used together.
I don't know. Class D amps are notoriously finicky and the slightest change can make them inoperable and difficult to troubleshoot.
If it's not defective, I'd leave it as is.
I repaired a LOT of these and virtually 100% had no problems other than the 2 transistors in the yellow square.
If it's not defective, I'd leave it as is.
I repaired a LOT of these and virtually 100% had no problems other than the 2 transistors in the yellow square.
