Re: is my pcb faulty
Those two grey boxes are capacitors not relays.. It is unlikely that they would go altogether causing no power at all to the other terminals.
You really ought not to be messing about with the board unless you know what you are doing.. :zap:
There are triacs and diodes and at least one fuse that I can see on that board that could cause your power failure and that is to say if it isn’t the power section itself.
Be wise, Call an Engineer