dvd drive no power

Lg electronics Bh200 blu-ray/hd dvd play...
June 26, 2010 at 12:45:10
Specs: Windows 7 64
Hi,

Some time ago my PC stop working, the power supply was dead and was replaced.

Since then, the DVD drive stop working. I first thought that whatever had fried the power supply would have also done the same to the DVD drive. I tried connecting different power cords, but the drive wouldnt power up.

I assumed the drive was dead,and so I bought a new one. It doest work either, whatever connections I make - tried switching both cable.

Im getting desperate, any ideas?

Cheers


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#1
June 26, 2010 at 13:14:45
"assumed the drive was dead,and so I bought a new one. It doest work either, whatever connections I make - tried switching both cable."

Sometimes a power supply DOES fry the board on an optical drive while failing (it's even more common for that to happen to floppy drives), but the new DVD drive should work, if the power supply didn't damage anything else while failing (e.g. the data cable to the drive) , and if the cable connections to it are correct and not damaged by something you did, and if it's an IDE drive, the jumper setting on the back of it is set correctly.

ATX mboards are always powered in some places by the ATX power supply, even when the computer is NOT running, as long as the PS is plugged into the mboard, the PS is switched on if it has a switch, and the PS is receiving live AC power.

Did you unplug the computer, or otherwise switch off the AC power to the computer, at ALL times, when you were fiddling with connections inside the case ??

If no, you may have fried the drive by merely plugging in it's power connection.

If yes, what do you mean by "It doest work either" ?

Did you remember to plug in it's power connector?

Even if there is something wrong with the data cable connection (unless something is shorted on it) , even if the data cable is not connected, if the power connector is plugged into the DVD drive, while the computer and Windows is running,
- the drive's tray should eject and retract when you press the button for that on the front of the drive,
- the drive's led should come on when you press that button
- and the drive's led should come on for a short time when you insert a disk in the tray and retract the tray.

Regarding the data cable connection, and the jumper setting on the drive if it's IDE, see Response 8 in this:
http://www.computing.net/answers/ha...

and - did you examine the data cable connection on both ends for evidence of damage - e.g. scorch marks, carbon deposits, etc. ?
......

Rarely, a power supply can damage something else on the mboard while failing - possibly the circuits for a data cable connection. Try it connected to a different data cable connector on the mboard.

Try the drive connected to another mboard.


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#2
June 26, 2010 at 13:38:54
Yes, I did turn off the ac power supply at all times.

Pressing the eject button doesnt do anything, with both cables plugged nor with just the power one connected.

What I find to be weird is that even when using the HDD cables, wich are obviously working or I wouldnt be typing from this PC right now, any of the DVD drives work. I also find weird that while having power reaching the drive, the eject button not to be working.

I didnt check the data cable for any sort of damage, as I believe that even if it was damaged the tray should still open/close.

Cheers for your quick reply!


PS: Its a Sata drive, not IDE
PS2: none of the drives are recognized by bios either


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#3
June 26, 2010 at 13:53:39
Much less common -
Make sure the pins are locked into the power connector you're plugging into the drive - if any aren't the male pins in the connector may be moving when you plug the connector in the drive and you may not be getting a proper power connection.
Or try a different power connector.

The plastic of the power connector and the power socket is shaped such that the connector plugs easily into the power socket on the drive if it's in the right direction. We have heard of a few people (guys) who have plugged it in upside down by forcing it into the socket - doing that and then booting the computer will fry the drive's board instantly.

"What I find to be weird is that even when using the HDD cables, wich are obviously working or I wouldnt be typing from this PC right now, any of the DVD drives work."

That probably indicates the data cable(s) you used with the DVD drives is(are) damaged. If any connections in the data cable are shorted together, that could certainly cause the drive to not work when the data cable is plugged in. See the info at the link in the latter part of response 1. It's common for 80 wire data cables, especially, to be damaged while unplugging them.


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