Keep blowing fuses on my A30's power supply outlet.

[JFischer911]

Does anyone have ideas why I might be blowing fuses on the power supply of my A30? Last week, my printer died mysteriously mid-print while I was out of the room. Since the retailer's support center wouldn't get back to me (still under warranty) a friend and I tracked it down to the fuse at the power supply outlet. I bought two new fuses and the printer came back on. I turned it off after a minute and planned to use it the next day. When I did, it died during preheat. I took it to a different outlet, put in the spare fuse and it died just as the bed finished heating. So apparently the blown fuses are the symptom and not the disease. Any suggestions or help would be greatly appreciated.

[William]

It seems your printer has a short circuit.
When the fuse burned? Under heating the hotend or the hotbed?
I suggest you check the hotbed and the hotend with the multimeter at first.

[MorningsideSanitarium]

Currently battling this issue myself. My A30 was great for a few months. Now I can't even use it. I've been throwing cash at it trying to keep it going. I'm about done. And I'll never buy Geeetech again.

[William]

Hi, thanks for your feedback.Can you describe your problem specifically?

[MorningsideSanitarium]

Mine doesn't seem to be popping during any specific event. It dies during printing. Could be an hour in, or days in, as just happened today. I started a print 2 days ago, and all was going well until I noticed it had stopped. Another fuse blown.

Octoprint showed as steady temp on both the hotend, and the bed. It seems to have started happening since I installed the E3D V6 hotend, but I've triple checked, and reconnected everything just in case, but there seems to be no problems there. I don't understand it.

[MorningsideSanitarium]

Does anyone know the ACTUAL fuse that should be used at the power supply cable? Seems to be a lot of disagreement over it. If mine is too low rated, that could be the issue, although I'm using an exact match for the one that came with it.

[William]

Hi, The motherboard fuses of the A30 are PUEF700, 7A, 30V.
And RUEF900, 9A, 30V.
You may need to measure the output voltage of your power supply.
I hope this can help you.