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Need help with a project

Waterworks178

Aug 21, 2022
12
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Aug 21, 2022
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12
I got this 30 amp battery charger as just a bare PCB, a discontinued spare part , I just built the enclosure and heatsinks for it, which I involved quite a lot of work, of course it now doesn't work and unless someone can help me out its going to be a total fail and be scrapped.

can anyone save my bacon please ?
20231223_115936.jpg
 

Delta Prime

Jul 29, 2020
1,969
Joined
Jul 29, 2020
Messages
1,969
More information is needed please.
A bare PCB?
Did you populate the PCB with the components?
maybe you acquired a 30 amp battery charger without an enclosure?
Does this discontinued spare part
Have a manufacturer named to go with it?
The transistor mounted on the heat sink are they electrically isolated? With thermally conductive pads?
If you're located in Canada there's no way I can fix your Canadian bacon!
Yuck!!
Are you a machinist?
The entire enclosure should be the heat sink. That's some serious work.
 

Bluejets

Oct 5, 2014
6,928
Joined
Oct 5, 2014
Messages
6,928
The transistor mounted on the heat sink are they electrically isolated?
Look to me like fully insulated tab type, no requirement for further insulation.

More detail required on "doesn't work ".
Does anything show any sign of life???
What supply are you running it from and what is it designed for?
Are you using any load in your "test"..?
 

Waterworks178

Aug 21, 2022
12
Joined
Aug 21, 2022
Messages
12
I got it as a new brand new spare pcb with no enclosure
I made no modifications to it
I attatched large heatsinks to the transitors with electrically isolating heat proof silicone sheet
There is power to the PCB and a humming sound but no vollage on the output cables and no screen function.
I am in the UK
 

kellys_eye

Jun 25, 2010
6,514
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Jun 25, 2010
Messages
6,514
Sow us a better view of the whole board. Why is there an isolated red cable floating around?
 
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