Line 6 Flextone II HD head - problem - help needed

[Andy777]

Hello everybody... It's ,y first post here, but have a big problem. From last tour I returned with a damaged Line 6 Flextone II HD. Voltage stabilizer is defective on the power supply board. Very unfortunate because it’s impossible to read symbol of it. I am looking the scheme to the same device or the owner of the same amplifier. Maybe someone of you could twist off those few screws and read the symbol of this part.

Any help is greatly appreciated. Defective integrated circuit is marked in red on the attached picture.

[gwright]

Here's the schematic which has a complete parts list including U1 on that breakaway board. As mentioned in the other thread, I'd be surprised if that was the only failure.

Flextone 2 HD.pdf

Hello everybody... It's ,y first post here, but have a big problem. From last tour I returned with a damaged Line 6 Flextone II HD. Voltage stabilizer is defective on the power supply board. Very unfortunate because it’s impossible to read symbol of it. I am looking the scheme to the same device or the owner of the same amplifier. Maybe someone of you could twist off those few screws and read the symbol of this part.

Any help is greatly appreciated. Defective integrated circuit is marked in red on the attached picture.

[ATTACH=CONFIG]42480[/ATTACH][ATTACH=CONFIG]42483[/ATTACH][ATTACH=CONFIG]42484[/ATTACH]

[Andy777]

Thx gwright... amplifier dropped from a height of 1 m, was in hard case, but maybe this was the cause of damage. It was in Mexico... I do not know anything about the voltage there. Flextone worked few years here in Europe and after back to US and MEXICO tour and to 110 V voltage... of course voltage was changed.

[nickb]

That's a pretty big drop. Not that it changes the repair process much other than looking for internal mechanical damage.

On the secondary test diodes D13, D14, D16 and caps C33, C34, C35 in case these caused excessive current. On the primary test D4, R60, C56, R52, D37, R51, C41 and R56. When these things blow it's normal for find a whole chain of damaged components that the fault current fried.

Please take care as there is 340V present even after power off until C1 and C2 discharge ( takes almost 2 minutes). Also there are surface mount components so you do require an appropriate skill set and tools.