Looking for tips on troubleshooting and repair- Western Digital Caviar 160 GB EIDE drive
WD1600BB-22GUCO , NO BIOS , NO spin up (no clicking)


MDL: WD1600BB-22GUCO
DATE: 08 AUG 2005
DCM: BSHNTJAH

Logic board - 2060-701266-001 REV A



1. How can I check the logic board other than visual observation for burnt components (no noticeable smell when it failed) . How ?

2. Replacement of logic board - If find hard a used drive of the same type , what numbers above must match to allow me the use the donor board changing the transferring the ROM chip or having it reprogrammed ?


If a replacement board doesn't work , I will just hold on to the drive until I can afford to pay a DR pro for their equipment and expertise .

-Thanks

when you the a circuit board use a strip of electrical tape to protect the head connectors, & if the Drive Spins then. go ahead with the NVRAM chip swap. if it doesn't spin then you more than likely have a motor problem. but remember to properly match the PCB. or else it won't work.
check the Circuit Board with Voltage Meter. & check to see if you have reading on your voltage rails. i usually remove the PCB then apply power to the PCB & check for Readings on the Motor Connector, & the HDA connector on the PCB, if you get no voltage start checking on power Connector & see if you can follow the Voltage path,

NVRAM is for IBM/Hitachi drives. WD has a ROM chip.

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sorry about that, ROM chip... thanks Dellguy

If your current PCB is dead and needs replacing you should match the PCB number, 2060-701266-001 REV A in your case. Also check that the main controller chip is the same. Swap over the 8-pin ROM chip at U12 from patient to donor and if the PCB was the only fault, then your drive should work again. Obviously there are some risks involved.

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Even if the motor does spin up you are not home and dry just yet.
There is a high probability the head preamp is damaged which would require physical intervention, a headstack swap in a clean room environment. This would have to be checked BEFORE any intended pcb swap because a damaged preamp could also damage any new replacement pcb.

So how can one check the head preamp ? Does checking it require the DR pro /clean room too ?

good eye on that one, kinda didn't want to bombard with to much precaution, but yes that is correct that a damaged PreAmp will also damage the PCB.. i think i saw a method of using a Meter to check for the Preamp condition, i just don't remember where.

DrFaustus -

Maybe this is the thread you are referring to for checking voltages on on WD drive logic boards -

easy-faultdiagnostic-troubleshooting-must-try-t12319.html

Any other connections to to check vor voltage ? resistance ?

Any other links for testing diodes on the WD etc ?

Are the the voltages checked with a PSU connection only (or does the board need to be connected to live motherboard via EIDE cable too - I just want to make sure .


Also , I found a dead drive with the 70265 board in my pas collecion . I assume that it won't be a donor for acessibing it. Howver, can I substitute this board just find out if my drive will spin ?

-Thanks