QSC PLX-1202 Power Amp

[AyEss]

Hey everyone..

I am no electronics expert, But i like to collect Pro Audio gear, Just for the fun of having a powerful system, At home

I have been quite successful in my previous projects.... My first project was a Peavey CS-1000 amp that i bought for cheap, Blown up.... Repaired that and enjoyed it for a bit, Then bought a Behringer DJX-400 mixer faulty, Fixed that etc etc
As i said, Im no expert, But i know the basics, and quite enjoy learning..

So just bought a QSC PLX-1202 power amp off ebay, Faulty...
Seller showed pictures, of a 8pic Chip.. Possibly a Opamp?!?!? Had gone bang, and was cracked....

So just looking for some advice, ready for when i receive it and get digging into it....

Is it common for a Opamp to go bang and crack?!?! Ive personally not heard of it...
Would it potentially be another issue that caused it?
Seller said "i powered it on.. and it was working for 2-3 mins, then suddenly went POP, and a burning smell... I opened up the cover, to find the chip had gone bang"......

What should i be looking for, when i receive it?
Ive never heard of shorted output transistors causing the OPAMP to go bang (if the chip even is an OPAMP.. will know more when i see it in person)

Any help would be appreciated...

 

[AyEss]

No QSC repair experts around?!?!

 

[555technoboy]

Don’t know if you are still pursuing this project or not. But that chip is a TOP210PFI. This is a self contained low current SMPS chip. This chip is responsible for generating the PSU bias supply voltages. Essentially the power supply to run the oscillator that drives the main switching transistors. I replaced one on an amp like this as it never powered on. However this one looks pretty blown. First thing I’d do is check the main fuse and see if it’s blown. If not it may have simply went bad. If the fuse is blown, there may be more damage.