I have a hahringer v2212 but no out put is i change a couple of stuff but still no sound i notice that led on the sub assemble is not been lit , need sum help

 

Have you searched for a service manual and/or schematic? Have you checked that power is arriving at the PCB?

 

no service manual and power is is the board is check the transformer wires and there giving the exact voltage labeled on transformer

 

no service manual ...

That's going to make it tough. But here are some things that I would pursue if I was in your shoes.

I see two bridge rectifiers on the circuit. One is the black, notched device in the upper left of your photo-3. The other is the round device on the opposite side of the white connector block. It's labeled with squiggly ~ AC marks and a + and - . I'd check both of these rectifiers to see what the AC input voltage is and what the DC output is.

Electrolytic capacitors grow old and can fail with no visual indication. With no schematic or service manual, it's not a bad idea to just do a shotgun replacement of all of them. By shotgun I mean to replace them all without testing or targeting their function in the circuit - just replace them. This may seem wasteful but it will give you brand new capacitors on your PCB and extend the life of the board even if they weren't bad to begin with. Be sure to match the capacitance, meet or exceed the voltage rating, and to meet or exceed the ESR rating. The latter may not apply to most of them but if you find any low ESR capacitors on the board, be sure to replace them with low ESR.

Try to get some better photos of both sides of the board. There are people around here that can give much better advice than I can, but not without seeing the board more clearly.

You said you replaced some components. Why? Did you do some testing, or see some evidence of failure?

 

Your transformer is giving out 3 sets of voltages, Blue, Black,Yellow wires. Check to see if there is AC voltages and any pcb fuses blown.

What is the number of the chip on the amplifier?

 

Your transformer is giving out 3 sets of voltages, Blue, Black,Yellow wires. Check to see if there is AC voltages and any pcb fuses blown.

What is the number of the chip on the amplifier?

the amplifier # is IRS2092

 

Datasheet.....

https://www.google.com/url?sa=t&sou...FjAAegQIBhAB&usg=AOvVaw06Ql_l30zR5MrbLq9fHahQ