| Electronics > Repair |
| GW GPC-3030 power supply |
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| LA2BPA:
Hi, I have a GW GPC-3030 power supply. It has three channels, two of them is adjustable (master/slave). The master channel seems to be working as it should, however the slave channel is not. The output voltage can't be adjusted, it just stays at 32V whatever i do. I have checked op-amps, transistors, diodes and potmeters in the regulator circuits. Any ideas? |
| Harry_22:
Hi! Could you attach a photo of PCB. I think I have a similar device. |
| LA2BPA:
Here is a couple of images of the unit. Frontpanel, main pcb and a bird view. |
| wraper:
Measure voltages in operation. Start from measuring if potentiometer actually adjusts the voltage on its wiper terminal. |
| Poroit:
This may help if you don't already have a copy. Page 5 gives you a Circuit Arrangement. |
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