DataFlash AF 1000

Hello from Canada,


I was wondering if anyone can lend a hand. I have 4 of these units and 3 of them has the same problem. Let's start with the 3:

All fuses are good. I have replaced the lamp holder and the lamp itself. When I turn it on the lamp does not strike. I hear a "buzzzzing" noise every second. The LED light shows it has power. Any ideas?

And the 4th one strikes but very little. Very low output I think. And I think it will lead to the same problem as the other 3.

Do I have to replace a part on the board to fix the problem? And, these units were working before.

Any suggestions would be greatly appreciated.

Thanks,
Azar
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