Control board (PCB) is electronic brain. In Egypt, board burns common due to load shedding. Danger is voltage spike on power return (350-400V instead of 220V). Capacitors and microprocessor not designed for this — burn in fractions of a second.
See if any of these signs match your device — each one increases the likelihood of this fault.
These are the causes we encounter while repairing Control board burnt from voltage spikes — ranked from most to least common.
Voltage spikes — #1 cause in Egypt
Power cuts without stabilizer
Nearby lightning
Heavy appliances on same circuit
High humidity
EEPROM corruption
Loose board cables
Any of the following = a danger signal — call now and don't try to fix it yourself.
On-site diagnosis, clear pricing before any work, and a documented 6-month warranty.