Problem- a2100 rt board failure (again)

[edsgarage]

Being that this is my first post I would like to say hello to everyone!!!!
This site is invaluable to anyone in the cnc world.
I have an arrow 750 with an a2100 control.
2 months ago the RT board failed.
I ordered a new one ($4700.00), plugged it in and the machine started.
Today the machine gave the same error with the red light on the bridge board indicating that the RT board failed again.
Has anyone had the same issue?
Could the bridge board be taking out the RT?
A while back the power supply fan failed and smoked the supply.
I replaced it and all was well for months.
If anyone has any ideas I would be extremely grateful.

Thanks,
Ed

[greg b]

Hi mate i had similar probs with a lathe i purchased from the states with a acramatic control it came up with bridge board failures and all sorts of things and with a bit of help from our more experianced members all we did was replace the power supply with a good quality one with plenty of wattage and reseated all the boards connected to the bridge board and so far shes been all good touch wood.regards greg