Solutions of clicking noise related to PCB in WD

[Ahmed_Samy]

Hello all,

as you all know that there are some reasons related to PCB which cause clicking noise , i face this problems with WD PCB (L Shaped) with (smooth Ic 1.3) so i'll report these reasons here in order of their Importance:

1- Resistor (R 120) is damaged (the most important reason) - the right value of this resitor is (1.2 ohm) - you can replace the damaged one by another good one from a donor PCB - you may notice that this resistor is present in many WD PCBs.

2- one of the small capacitors is removed -the removal of the small capacitors may occured while soldering - not in purpose - ... so becareful
(good inspection of the PCB with magnifying glass or even with naked eye will detect the removal of the capacitor) - then you can replace the removed capacitor from a donor PCB.

3-firmware microchip is damaged ( it's rarely occured)

i will support this topic by image as soon as possible

any question ..any suggestion ... any criticism .... u all r welcome

Ahmed_Samy

[rameez]

good share .

[Ahmed_Samy]

Thanks Rameez

[dobrevjetser]

Hi Ahmed,

Thanks for the info.
May i just point out that R120 is 0.12 ohms and not 1.2 ohms.
Small but significant difference

Dobre

[Ahmed_Samy]

thanks Dobre for correcting my mistake , i'm really sorry

[Ahmed_Samy]

sorry all for my mistake

the right value of R120 is 0.12 ohms (not 1.2 ohms)

[Tawfeek]

hi ahmed
i think you are egyptian too nice info. i read
hope to talk u my email is tawfeek1979@yahoo.com
regards
tawfeek
Ahmed_Samy,