hi gurus!

i have IBM deskstar DTLA-305040 with burnt motor controller, i replaced it and still not powering up, maybe other components? please help me ....

The 90G2018 motor controller shown on photo has been replaced.

Thanks

What did u replace it with Hot gun or with soldering iron if u used just hot gun then resold it with soldering iron sometimes pins dont usually touch the points .

soldering iron, yes rameez i have checked the connections are ok and properly connected.

if u can find another board of the same family DTLA transfer the orignal NVRAM to that pcb ur drive will work fine after that .

thanks rameez i will try it out.

Rameez i swap ROM it doesnt work, the faulty pcb has 25FV101T chip and S93C6 ROM, the replacement PCB i have has no 25FV101T chip.

I have tried measuring Q1, Q2, Q3, U9 all ok, could it be the Read Channel chip? D1 and D2 at the back of the pcb are also ok.

u will have to find the same pcb that has both ROM and NVRAM present like in your pcb if u have trouble finding the pcb give me info i will look in my stock .

Rameez, it doesnt work i tried swapping ROM and NVRAM, IBM deskstar as far as i know not easy to swap ROM and NVRAM unless same version. Anyone have any clues? Thank's

On which pcb did u solder the orignal nvram of the drive , what did the drive do after u swap pcb and nvram ?

Hi,
in your photo i also see a mosfet/regulator with a hole ?

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Amarbir S Dhillon , Chandigarh Data Recovery Labs [India]
Logical,Semi Physical And Physical Data Recovery
Website-> http://www.chandigarhdatarecovery.com

Rameez, the drive clicks after i swapped NVRAM and ROM to donor identical pcb.

Amarbir the hole is the manufacturing hole, its is tested working. I still could not figure out why the drive will not power up, i have identical pcb board, i swapped the NVRAM and ROM and still would not work. ummmm headache....

Heeeeeeeeeeellllllllllpppppppppp!

Hi Terranova,

Did you check if the nvram is still readable ? (use eprom-programmer)
Because, if the nvram is defective or corrupt, the drive will not start either!

Best regards,

Dobre

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dobrevjetser , thanks...i swapped the nvram and rom to donor identical pcb and the drive starts but clicking...so i think it must be working....not sure...i dont have eprom programmer to check individual chips...

Hi,

Most probably U are facing a burnt preamp....

pepe

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hi Pepe, thanks i will give it a try changing hda.

Today before i do head exchange the drive starts up but the motor controller chip gets really hot, i mean untouchable.

try to use SA Switch.. Sometime it because of its motor controller IC too HOT..

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prodata tried that doesnt work thanks

Tried replacing 90G2018 today same results.
Is read channel exchangeable? I suspect the read channel chip is blown cause all major parts warm except the read channel chip dead cold.

Hi,

just replace the MHA, put the prepared donor PCB on the drive afterwards, it should work...

pepe

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Adatmentés - Data recovery