Hard-drive not spinning up at ATA100. Need new LogicBoard?

Question

Power Mac G4 MDD

This Power Mac G4 has Mirrored Drive Doors.

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Jan Bernert @janbernert

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crwdns2931729:0crwdne2931729:0: Mha 3, 2010

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Hard-drive not spinning up at ATA100. Need new LogicBoard?

Hello everyone,

I've got a MDD (DP 867 / 133MHz FSB) with a harddisk not spinning up when connected to the ATA-100 port. At the ATA-66 it spins up , but no target disk function / no boot up. When placed into an external hard-drive bay it works fine.

LogicBoard issue ?

If so ..

May it be possible to fit a FW800 LogicBoard (1474a) into a MDD with an installed LogicBoard "820 - 1380-A" ? Cutting out that port being compulsory . Are there compatible LogicBoards to fit in (eg. 820-1453a)?

Regards Jan.

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Supplemental.

The system does seem to not respond to ANY inputs from keyboard, caps lock not working, fans speed up, heat-sink get warm after some time.

crwdns2934271:0Mha 4, 2010crwdnd2934271:0 Jan Bernert crwdne2934271:0

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mayer @mayer

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MacHale Enterprises

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crwdns2931729:0crwdne2931729:0: Mha 3, 2010

crwdns2933897:0crwdne2933897:0

Try double checking and exchanging the HD ribbon cables.

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Good to see you back. +

crwdns2934271:0Mha 3, 2010crwdnd2934271:0 rj713 crwdne2934271:0

Thanks for your reply !

No change at all .. tried all ATA ports - disk spins up on the 33 and 66 ATA channel, and remains silent on the ATA 100. It even starts when cable is unplugged while the computer is running.

crwdns2934271:0Mha 3, 2010crwdnd2934271:0 Jan Bernert crwdne2934271:0

Will it start up from the optical drive? Insert disk & hold down "C" key. I have two of the dual 1.42. logic board 630-4643

crwdns2934271:0Mha 3, 2010crwdnd2934271:0 mayer crwdne2934271:0

I found some good prices here: http://macbookfreak.com/mdd-motherboard-...

crwdns2934271:0Mha 3, 2010crwdnd2934271:0 mayer crwdne2934271:0

I thought about this one >> http://cgi.ebay.com/ws/eBayISAPI.dll?Vie... <<

are all the boards (FW400) compatible to the 820-1308a? Do you've got a spare board for me?

crwdns2934271:0Mha 4, 2010crwdnd2934271:0 Jan Bernert crwdne2934271:0

crwdns2934285:0crwdne2934285:0

Supplemental.

The system does seem to not respond to ANY inputs from keyboard, caps lock not working, fans speed up, heat-sink get warm after some time. — Jan Bernert
Thanks for your reply !

No change at all .. tried all ATA ports - disk spins up on the 33 and 66 ATA channel, and remains silent on the ATA 100. It even starts when cable is unplugged while the computer is running. — Jan Bernert
Will it start up from the optical drive? Insert disk & hold down "C" key. I have two of the dual 1.42. logic board 630-4643 — mayer
I found some good prices here: http://macbookfreak.com/mdd-motherboard-... — mayer
I thought about this one >> http://cgi.ebay.com/ws/eBayISAPI.dll?Vie... <<

are all the boards (FW400) compatible to the 820-1308a? Do you've got a spare board for me? — Jan Bernert