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[Solved] ATI 4850 back from the dead!

Forum Graphic & Displays : Graphics Cards - [Solved] ATI 4850 back from the dead!

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Best answer from nforce4max.

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brett1042002   10-09-2009 at 04:05:43 AM

So, I rebuilt my old PC today. It had been sitting, in pieces, in my closet for the past 6 months. Athlon X2 5400+, ATI 4850 512mb, 500gb HDD, 4gb RAM. Threw it all together, booted it up and got those evil POST Beeps :(. 1 long, 2 short.... video card failure. I tried several things... clearing CMOS, checking connections, power, reseating, etc etc... it was dead. I was so bummed. So, I started reading up on people sticking their failed mobos and video cards in their home ovens and then miraculously working. I thought what the hell, it's dead anyways... it cant hurt. So I stripped the card of the heatsink/fan... put the card on a cookie sheet at 375 degrees for 8 minutes.... took it out and let it cool off.... popped it back in my PC...booted it up... and the damn thing works fine now! No beeps, POSTs fine, have a normal display!

Anyone else had this work for them?

------------------------------ PII 955 BE CPU @ 3.6ghz w/ ZeroTherm BTF90 Copper HS, 8gb Corsair RAM @ 1600mhz, Antec 1200 case, 650w Corsair PS, Asus TOP 4890 1gb, Seagate Barracuda 7200.12 500gb HDD / 7200.11 640gb Slave, Windows 7 Pro 64-bit RTM
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Best answer from nforce4max
The old oven trick crude but it works and is fairly common for riving G80 cards. All it does is partly melt the solder joints and sealing any microfisures is the solder. The pros use what is known as a reflow oven to do the same trick.
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skolpo   10-09-2009 at 07:04:56 AM

I guess it sodered some misconnections.

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soundefx   10-09-2009 at 08:14:31 AM

Wait a minute.. you baked your card at 375 degrees?
I have heard of card being able to handle high temps before, but damn.

If this is true, you have one hell of a card and you will never have to worry about it failing because of over heating.

Reply to soundefx
zipzoomflyhigh   10-09-2009 at 03:12:34 PM

Likely the card wasn't seated right the first time or you didn't have the power connected properly.

Message quoted 2 times
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jamesgoddard   10-09-2009 at 03:20:09 PM

zipzoomflyhigh wrote :

Likely the card wasn't seated right the first time or you didn't have the power connected properly.



The oven trick is a known fix if you have dry joints... And I guess 375 is in Fahrenheit, so 'only' 190 dec C...

soundefx - no this is not a working temp and a GPU running at this temp will certainly fail, as what's happening is the solder bump attaching the chip will have melted, hopefully (and it looks like the case here) re connecting the GPU to the PCB

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nforce4max   10-09-2009 at 03:22:54 PM
Best answer

The old oven trick crude but it works and is fairly common for riving G80 cards. All it does is partly melt the solder joints and sealing any microfisures is the solder. The pros use what is known as a reflow oven to do the same trick.

Reply to nforce4max
hallowed_dragon   10-09-2009 at 03:25:07 PM

Dinner is ready...tonight we have a 4850.

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------------------------------ Q6600 stock; GB-P35-DS3L; 4GB A-DATA Vitesta Extreme; Sapphire ATI 4870 760/1000; 1+ TB HDDs (Seagate + Maxtor + WD); OCZ StealthXtream 600W; ASUS VW222U 22"
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brett1042002   10-09-2009 at 03:45:38 PM

zipzoomflyhigh wrote :

Likely the card wasn't seated right the first time or you didn't have the power connected properly.

 


I re-seated the card 4 times.... in 2 different 16x PCI-e slots on the Asus mobo... and reseated the power connection the same amount of times. The card was getting power... the red light on the video card flashed 2 times on boot and lit up in sync with the beeps during the POST. I spent about an hour troubleshooting it, before deciding to pop it in the oven. It was dead at that time.


Message edited by brett1042002 on 10-09-2009 at 03:53:59 PM
------------------------------ PII 955 BE CPU @ 3.6ghz w/ ZeroTherm BTF90 Copper HS, 8gb Corsair RAM @ 1600mhz, Antec 1200 case, 650w Corsair PS, Asus TOP 4890 1gb, Seagate Barracuda 7200.12 500gb HDD / 7200.11 640gb Slave, Windows 7 Pro 64-bit RTM
 Reply to brett1042002
jennyh   10-09-2009 at 03:51:44 PM

hallowed_dragon wrote :

Dinner is ready...tonight we have a 4850.



I'll have one with chips (note only uk'ers will get this pun).

------------------------------ AMD to make $1.5bn profit Q4, *gauranteed*
 Reply to jennyh
obsidian86   10-09-2009 at 03:52:46 PM

one burger with a side of 4850 please


Message edited by obsidian86 on 10-09-2009 at 03:54:37 PM
Reply to obsidian86
lashton   10-22-2009 at 05:34:58 AM

mine wont work a microsochip is burnt out :(

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------------------------------ AMD Phenom 2 X4 955 (4.0 GHz|1.36 volts|236 X 17),Gigabyte MA780G-UD3H, 6 GB DDR2 800 RAM (unganged), 2 X 1TB, 1 X 500GB | 22" BenQ Wide Screen monitor, Zalman CNSP cooler
 Reply to lashton
nforce4max   10-22-2009 at 05:57:39 PM

lashton wrote :

mine wont work a microsochip is burnt out :(



Does it not post or power up?

Reply to nforce4max
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