"raden" wrote in message
...
In message , G&M
writes

"raden" wrote in message
...
Usually the microprocessors last forever - it's the thrystors or
triacs
driving the load that go pop.

Not even close ...

Really ? Look at the standard SEMI MTBF charts then.

When you spend your days repairing boiler PCBs, you don't need to look
at charts to tell you the faults.

as I said .. in the real world

So what parts do you find die most often ? And is the information fed
back
to the manufacturers to stop them carrying on using a faulty design ?

You are joking, I take it

Of course they know the design faults

If they do and have an ISO9001 certificate then report them !!