AC adapter on DC in

[alam007]

used wrong adapter, heard a pop and it didnt' work. but then a day later it worked. now it doesnt. too late?

 

[RealBeast]

Most likely too late, but since you have provided no information on the device, proper DC voltage/amps or the AC adapter used it is difficult to say for sure.

 

[alam007]

The adapter was the same voltage and amperage (9V, 300 MA) except it was AC. I had it in and pressed power on for a few seconds and heard a pop. I realized the error and used the DC adapter but it didn't turn on. I then put in batteries and it turned on. Later in the day i used DC adapter and it worked.
Next day nothing worked.
Was it just a last gasp before component failure? I suppose it is probably beyond my abilities to rescue it? Or is there a best guess for components that may have been damaged and possibly replaced? If the cost/time to fix is over $150, then it wouldn't be worthwhile.

 

[RealBeast]

With this type of damage, it is difficult to determine which circuits or chips are damaged so I doubt that you can do a self repair.