Ground Zero 1.10000 power suply !!

[apolodor]

Q2 nd Q10 is same?ktd1304?i understand correctly?? a lot of thanks

 

[Perry Babin]

Are Q2 and 10 marked MAX on your board?

 

[apolodor]

can not see well..was burned.but i see in other photo (max)...i wait the components from tme.eu and i will change...i will come back..thanks again

 

[apolodor]

i have one problem.ktd1304 i cannot fiind??farnell.com no have.tme.eu no have..you know something similar for replace?

 

[rrae]

I think, that i replaced with 2sc3326

 

[apolodor]

Hello!Yesterday i tryed to fix it again but my audio driver board is stil not working.SMPS work well, audio driver board have power supply,audio signal input is good but on the outside no have signal..today i will remove again audio driver board and separated i will put power suplly 15 v,audio signal and i try to fix step by step.I wait any adivce from your!!Al the best for users from this thread!

 

[apolodor]

i fixed supply.problem was some transistor pilot ner tl 494 i changed with bd 139 140.now my problem about this amplifier is d class driver.Ifounded burned and before was repaired.i founded few resistance defective.if somebody have a diagram for D class driver to post here.i want to know input signals and output signal for testing with my scope.

 

[NadaD]

This amplifier board wont be reliable, look at your driver board, all vias are pulled out. Expect intermittent problems.

 

[Perry Babin]

ChipQuik intially seems expensive but it saves an amp from this type of damage so in the long run, it's well worth it.

 

[apolodor]

i want to save this amplifier...if somebody hhave to sell this board i am interested.i know , my driver is not so good but i try to savemarry christmas!