Washing machine PCB control circuit board troubleshooting testing fault finding

[@Di-yj9sn]

Can you please tell me the 7 optocouplers numbers of Samsung inverter front loading washing machine (2pcb type)

[@ricardoferreira2811]

be aware of Zener diodes, sometimes the multimeter wrongly says its ok , you need a curve tracer to check them

[@dobythedog]

Testing already soldered down components doesn't tell you anything since the readings will often be wrong as the components are connected to others.

[@cagmito76]

obviously but you do not start removing components immediately.

[@zaczac3024]

This technique is known as “shotgunning”
Works if you understand how components behave in circuit and have no info
It can be time consuming
I suggest a strong magnifying glass to try & spot damaged components

[@krishnakumar8219]

Please new board price

[@cagmito76]

Sorry I don’t know varies

[@aboabdrahmanaziz8752]

Thnks

[@cagmito76]

no probs

[@krishnakumar8219]

New board required

[@cagmito76]

Sometime replacement it better than repair

[@pfanotheophilus5946]

Hi .
My washing machine doesn’t not wash anymore,
All it does is to spin and dry.
When filling water, it doesn’t not contain water ,it fills and drains at same time.
Could it be a pc board fault?

[@zaczac3024]

1. Check the drain hose, it must be higher than half way up the glass door
2. Some machines, ie Bosch, have a ball that floats in the sump hose attached to the pump, check this
3. If the machine is pumping out the water, instead of the water just running out, the pressure switch maybe faulty, it’s incorrectly indicating the machine has over filled

[@aboabdrahmanaziz8752]

Thnks