This unit has one damaged channel. U1 is a IRS20124S. Is there something else I can use without needing to replace them in every channel? Also, D32 has JS written on it. Not sure what that part is. Q21 says 2Q and Q22 says W1A? I have to go out but will try to look up the 3 in the code book later or tomorrow. Biggest issue currently is the IRS20124S. I got the output transistors.
Thanks in advance!
Pics coming in a minute 🙂
Thanks in advance!
Pics coming in a minute 🙂
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The driver IC has to be replaced with an identical part.
Could JS be J5?
I have nothing on this amp so I'll have to rely on you for all details.
Photo of the driver board?
Could JS be J5?
I have nothing on this amp so I'll have to rely on you for all details.
Photo of the driver board?
Good afternoon Perry.
I believe the class AD "output card" is just signal stuff??... Please see 1st pic. I can remove 1 from the board if you'd like a nice picture of the card.
I believe the output section is the 2nd picture. That's where all my damage occurred.
I believe the class AD "output card" is just signal stuff??... Please see 1st pic. I can remove 1 from the board if you'd like a nice picture of the card.
I believe the output section is the 2nd picture. That's where all my damage occurred.
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At this point, I think you should confirm that the 20124 has the correct supply voltages and replace it and all other known defective parts in that channel.
No need to remove the driver board.
This IC has on-board over-current protection so you need to use exact replacement output FETs.
No need to remove the driver board.
This IC has on-board over-current protection so you need to use exact replacement output FETs.
I have exact replacement output fets. It used IRFB4115s. I'll see if Octopart lists the IC
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I have some on the way, I can let you know when they arrive, if you dont find any.
