most there is a special Firmware on the HDD´s for Recorders, not only a special File Format

For 100uF and less, would it be easier to replace SMT electrolytic capacitors with ceramic capacitors?

Ive got a sharp vc-a503 the slip clutch wont engage the drive gears any suggestions?

There is a software called Diskgenious that is very good and free. It would be able to show you if the computer detects the drive or not, even if it is defective and the type of formatting it has now. It may be formatted for linux, for example, and your Windows computer may not be able to recognize it natively (but that software can).

I have never had any success employing the freeze technique on suspect hard drives.

You can copy the whole disk to an another HDD with DDRESCUE

Windows will almost certainly not show the drive in explorer even if it’s working because it’s likely formatted with something like EXT3 (Linux). You’d need to look in disk management (right click start). The new drive probably needs to be blank for the recorder to recognise it as a usable drive. You can wipe the drive in windows using diskpart. Google how to use the diskpart clean command but BE CAREFUL because if you fluff it up you can erase your system drive by accident.

Hi probably is just hdd remove the board and look in to tvs diodes of the drive. To format drive try secrete menu skip 079 there you can format the hdd

I bought this same unit form the thiftstore for$8

Try formatting the Hard drive in Fat32

لماذ لاتفرغ المكثفات قبل فحصها .وقبل سنوات نزلت صين جهاز فحص مكثفات صغير وفعال وممتاز افضل وارخص مما عندك .وتحية للك من الاردن