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IDE Ports Kill HDD Power

By TxTopgun ·
After 22 years working on these things, I have just ran into something I have never seen before. I have an emachine that one day was working fine and after shutting down it wouldn't come back up. I first thought it was the hard drive because it wouldn't spin up. Then I noticed the CD drive wouldn't open either (I was going to try to boot from it for diagnostics). Since it would be extremely unlikely for the CD and hard drives to be go bad at the same time, and they were connected to the same power lead, I thought it must be the power supply...no such luck. I decided to try a known good drive and it wouldn't spin up either...power supply good and drive good. Well then I decided for some reason to see if the drives would spin up if not connected to the IDE cable...they both did. Note: One is connected as the primary master and the other as secondary master. Has anyone ever seen this before? What could cause it? It just seems strange to me that both the IDE connector circuits would short out at the same time. Every drive I have tried worked fine until I connected it to either one of the IDE ports (changed cables too). I am confused.

Thanks

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Same problem IDE Ports Kill HDD Power

by gerbst In reply to IDE Ports Kill HDD Power

I had the same problem , it turned out that it was the Power supply , it was not putting out enough Watts.. it was ok with one drive but not two.. changed out to a 350 Watt power supply and problem was solved .. I was also getting problems with the drive findin data before change out , it fixed that as well.

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Seen similar

by EASANTOS In reply to IDE Ports Kill HDD Power

I have an emachines box that I have run nearly continuously for 4 years with an occasional problem that comes out of the blue. My fix has always been to open the case, give it a good vacuuming, re-seating all the boards and cables by removing and re-installing them.

I swear, each and every six months I am forced to do this -- but the box is as good as new!

I would never but another of these pieces of c**p knowing what I know now.

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Have seen that happen

by 1stladytech In reply to IDE Ports Kill HDD Power

I don't know why, but that is a common failure on the motherboard. It is one of the ways that we check to see if the board is bad on initial checkout on the bench. Usually both controllers go at once, with no visual, but it has always been the mb that has failed. Usually there has been a power surge or lightning strike, but not always.

Good Luck,
Vickie

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Tobacco smoke can cause this

by zookeeperz In reply to Have seen that happen

A friend of mine had a pc that would run 5 mins then go black. I found out his son was a cigar smoker and I sprayed the S**t out of it with contact cleaner. I guess the tobacco resin was shorting out the circuits once it warmed up. It works great now.

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Tobacco smoke can cause this

by zookeeperz In reply to Have seen that happen

A friend of mine had a pc that would run 5 mins then go black. I found out his son was a cigar smoker and I sprayed the S**t out of it with contact cleaner. I guess the tobacco resin was shorting out the circuits once it warmed up. It works great now.

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Tobacco smoke can cause this

by zookeeperz In reply to Have seen that happen

A friend of mine had a pc that would run 5 mins then go black. I found out his son was a cigar smoker and I sprayed the S**t out of it with contact cleaner. I guess the tobacco resin was shorting out the circuits once it warmed up. It works great now.

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Check power supply

by md63sc In reply to Tobacco smoke can cause t ...

Be sure to check your power supply , with a meter.
Just because it is working does not mean it is working. I have had the same problem before. Sometimes it would boot sometimes not. After checking the voltage I found only 11.4 and 4.4 volts.You can only vary by a couple of volts either way, and have a stable mach.So take advice as mentioned before and go with a high end power supply.

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Actually on the 5 V rail

by HAL 9000 Moderator In reply to Check power supply

You have a very small tolerance which is less than .5 of a volt any more than that amount of difference from what is supposed to be the base voltage will cause problems. Mostly it is on the Low side because of everything that is connected and the PS doesn't have enough in reserve to supply the required amperage to everything connected.

In a severe case I saw all the MBR's on one computer corrupted which in that case effectively meant to total loss of all the data stored as well as all the programs. Of course in that particular case there where 19 HDD connected so it was a bit more than a simple replace the PS and reload.

Col

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Tobacco smoke can cause this

by zookeeperz In reply to Have seen that happen

A friend of mine had a pc that would run 5 mins then go black. I found out his son was a cigar smoker and I sprayed the S**t out of it with contact cleaner. I guess the tobacco resin was shorting out the circuits once it warmed up. It works great now.

Collapse -

Tobacco smoke can cause this

by zookeeperz In reply to Have seen that happen

A friend of mine had a pc that would run 5 mins then go black. I found out his son was a cigar smoker and I sprayed the S**t out of it with contact cleaner. I guess the tobacco resin was shorting out the circuits once it warmed up. It works great now.

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