My STM32 had a bad connection between the connector of the bed and the board. This causes one pin to melt. I now have a new connector and in trouble that it is not clear to which pin og the transistor (P55NF06L) this must be bound.
I assume it is the topmost like shown in the attached picture, because this nearest to the connector. Also assume it should be maked pin4 like painted on the picture. Any help really appreciated.
http://www.datasheetspdf.com/PDF/P55NF06L/719767/1
Actually my bed does not heat at all.
Stefan
STM32 need help on fixing
STM32 need help on fixing
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Re: STM32 need help on fixing
Ok,fixed by myself and maybe other will have the same problem.
it is no good idea to make a direct connection. There is a 4.7k resistor and I assume also the LED somewhere connected.
To solve the problem I de-iron the connector again and found a great connected gold plate on the front side that was still working. Therefore use some copper AMG24 wires and bring connection from the front to the back where i want to iron.
Now all fine again and the heat-bed is working again.I'm very disappointed about geetech support. They neither give an answer here or on direct mail. Anyhow this is a guarantee failure where customer expectation is at least help. In Germany these kinds of failure directly cause a resend of the board
it is no good idea to make a direct connection. There is a 4.7k resistor and I assume also the LED somewhere connected.
To solve the problem I de-iron the connector again and found a great connected gold plate on the front side that was still working. Therefore use some copper AMG24 wires and bring connection from the front to the back where i want to iron.
Now all fine again and the heat-bed is working again.I'm very disappointed about geetech support. They neither give an answer here or on direct mail. Anyhow this is a guarantee failure where customer expectation is at least help. In Germany these kinds of failure directly cause a resend of the board