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 Quadra 840AV... dead
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Kami
Junior Member


Canada
132 Posts
Posted - 13 Oct 2003 :  11:50:44
I got into a nostalgic mood yesterday and decided to pull out some of the oldies but goodies. I fixed up the 605 and started on the 840AV. Nothing. No sound but the hard drive and power supply fan. Opened her up, Everything seemed in order - RAM was there and a battery was in place. Tried a restart - nothing. I decided to open her up to check the board and battery. If you've done this before you know that it is a good 15 minute job (but not nearly as bad as 8100/8500/9500 case)

Battery was dead so it was replaced, RAM was reseated. I partially reassembled the computer to see if it would boot. Tried different hard drives and tried to boot from a CD. Nothing, nothing, nothing. The board didn't look like it was damaged.

The only good news is that I have a backup 840AV that I can use. If someone else can suggest something else to try then I would like to hear it. Otherwise, my bad news will become someone else's good news as I will probably part out the working pieces since the computer is basically disassembled.

The Balance Of Judgement
Senior Member


Ivory Coast
1006 Posts
Posted - 13 Oct 2003 :  16:13:46
Was this a school machine or the one I gave you?

I hope it wasn't mine. [:o}

He was looking so good when he left!

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Kami
Junior Member


Canada
132 Posts
Posted - 13 Oct 2003 :  17:06:09
Don't worry, it was mine. I had babied mine for quite a while so it is quite sad that it is dead.

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QuadraJets
Junior Member


USA
344 Posts
Posted - 13 Oct 2003 :  17:28:50
try washing the board with distilled water and drying it with clean compressed air. this has fixed mine twice now. there are several capacitors leaking, and i need to replace them. I solved the sulfur corrosion problem with some acrylic clearcoat

If you don't have dry compressed air like I do, just let the board sit for a week or so to dry before testing it.

Artillery Commander/Engineer, 68kMLA
Liberated:
LCII , III+, IIci, Q700, 800, and 840av, P550, 410
Contraband: Beige G3/300 MT o/c 400mhz, (2) 6100's
Hotline mirror server:
68k.dyndns.org

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Kami
Junior Member


Canada
132 Posts
Posted - 13 Oct 2003 :  20:47:46
Hi Quadra

I remember reading your posts on the topic so I was especially careful to check the board around the capacitors. Didn't see any evidence of leaks but I guess it can't hurt to give it a bath.

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stonent
Junior Member


USA
155 Posts
Posted - 21 Oct 2003 :  22:12:55
I had the same problem on my q840, it was a bad battery, but the easy way to get it up temporarily is to hit the power button repeatedly and after about 10 seconds it will come to life.

SE 4/2000/FDHD/7.0.1 :)
Q840av - Alive!
Q650 64/2000/A/UX Woot!
SGI Indy R5000SC
2 Sparc Classics, 1 IPC, 1 SS4, 1 SS5
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Unknown_K
Full Member


USA
602 Posts
Posted - 22 Oct 2003 :  01:07:38
Hope you revive it.

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QuadraJets
Junior Member


USA
344 Posts
Posted - 22 Oct 2003 :  03:13:27
well, my 840av is weird on the battery thing too. When a battery is installed, the power supply won't even attempt to turn on. with it removed, it starts up fine, without the switch trick.

Artillery Commander/Engineer, 68kMLA
Liberated:
LCII , III+, IIci, Q700, 800, and 840av, P550, 410
Contraband: Beige G3/300 MT o/c 400mhz, (2) 6100's
Hotline mirror server:
68k.dyndns.org

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maclover5
LC Doctor/Hot Rodder


Australia
5830 Posts
Posted - 22 Oct 2003 :  04:02:56
Yeah, but isn't that because of that icky water?

"**** em" - Jobs in regards to customers
Warrior maclover5
68kMLA

Official 68kMLA Detective
Number of 68ks Liberated: 7
Number of Contraband (PPC) Liberated from the Dumpster: 1Go to Top of Page

QuadraJets
Junior Member


USA
344 Posts
Posted - 22 Oct 2003 :  14:29:54
honestly, i don't know what casued that one......It's on crack.

Artillery Commander/Engineer, 68kMLA
Liberated:
LCII , III+, IIci, Q700, 800, and 840av, P550, 410
Contraband: Beige G3/300 MT o/c 400mhz, (2) 6100's
Hotline mirror server:
68k.dyndns.org

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cory5412
68KMLA Comrade-in-Arms


USA
4679 Posts
Posted - 24 Oct 2003 :  21:26:28
I remember when my 840 av died...

Dear, Sweet EverLast, I shall remember thee from henceforth, as the Everlasting mac, that lasted very short of a time after it was named. (never put performa speakers into your 840avs... they'll die

iHope that you get it working like new again soon!

Official 68k videographer
Official MLA TourGuide
Editor of the MLAgazine
"I'm just a normal computer geek who somehow landed a social life"Go to Top of Page

Kami
Junior Member


Canada
132 Posts
Posted - 25 Oct 2003 :  18:27:36
Looks like the 840 is a goner. I'll post a working parts list for those who are in need of some pieces to make their 840's a little better

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