Hello. I have an IC I can't read the reference. Could somebody help. I can Identify G ZL D4 but not the remainder . Thanks for your help.

 

The numbers you can see look like part of the date code and not part number.
I see part of the ST logo so its a ST soic 14.
Try and show a better photo of the surrounding circuit. Describe what its in. Or even try a jotting down a bit of a schematic about it.

 

Clean the top correctly and use angled lighting.

Hi. Here is an other photograph op the component. It looks like on top 339 and GZL D426. I try to find what it is but nothing up to now. It is close to the power supply of an amplified Eurolive subwoofer. thanks for your help.

 

LM339ADT STMicroelectronics | Integrated Circuits (ICs) | DigiKey

Thanks so much for your help.

 

Lm339

 

LM339 is a simple comparator

Was it burn during soldering or in operation

if in opperation, I'd suggest that a lot more would have been taken out as well,

 

ST 67?D426?

 

Clean the top correctly and use angled lighting.

And wipe the top with a fluorescent hi-liter and use UV lighting. That will sometime bring up the stamping a bit better especially if it is laser etched. Tip of the hat to Yaakov!

Now, find out why it blew its guts out...

 

Lm339

Thanks.

 

On the schematic IC1 is labeled 339.

Yes, but to the right of the 'ST' is either 6 or 66

 

As others have explained, if you plan on repairing the unit, it is very important to have an understanding why it blew up in the first place.
ICs don’t burn like that on its own.

 

LM339 is a simple comparator

Was it burn during soldering or in operation

if in operation, I'd suggest that a lot more would have been taken out as well,

It burnt in operation. I think an overvoltage occurred. I'll check the components around.

 

If it is the comparator, to do that amount of burning takes a LOT of energy
were talking lightening or at least mains voltage ,

How did you get to try to fix it ,
was it in use when it went bang ?

 

It's a Behringer B1800XP model. Please, does someone have the electronic diagram ?

 

So? IC on the PCB is marked 339 same as the schematic diagram, why would it be something else?

@anniel747 Sorry- I'm following you now. Agreed.