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led lights red

sajtion

sajtion

sajtion

Associate
Joined
2 Jul 2005
Posts
818
Hi does anyone know what the three solid red lights mean on this video card Asus ATI Radeon HD 4870 512MB. The cards fans seem to spin and working fine except the 3 led lights are like i mentioned above. What does it mean?
 
What PSU do you have, as it may not be powerful enough, and do you have both 6x Pins connected.

HD4870 LEDs

D1601 - Red LED On, shows critical temperature fault

D1602 - Red LED On, shows External power connector A was removed

D1603 - Red LED On, shows External power connector B was removed

D601 - Red LED On, shows critical Core power fault

At BOOT/POST, the card's fan will spin @ 100% for a short while and 3 of the 4 LEDs will light up for a brief period and then go out ( D601 should remain unlit ). This is NORMAL behaviour as the card is performing it's own type of POST test.
 
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it doesn't make any sense to me. the card is brand new and it doesn't produce any sounds. it seem to work but it has 3 red lights. the main problem is why it won't boot my monitor. i'm out of ideas
 
rolypolyman said:
Is it a new monitor and if so by default they are set to run on D-SUB you would have to change the source to digital if using DVI.
Click to expand...

the monitor is older crt and im using digital external connector to plug it in video card.

here is the new thing i put in new corsair 750w power supply and the red lights are still on and monitor shuts off. is there anything else i could try? i don't know how to solve this
 
Can you confirm that all the power sockets are correct plugged into the graphics card. It may be a DOA card and you may have to RMA it.
 
i can confirm that i plugged in both 6 pin connectors from the psu and is seated correctly in slot on motherboard. i don't think its dead. i think its something else but don't know what
 
it booted to bios and everything is working at the moment

i forgot to plug 8-pin eps +12v power plug into the motherboard. it was covered by cap so i removed it and now it boots monitor

thanks for everyones help and suggestion
 
I had a similar problem as this after flashing the bios on my Sapphire HD4870 went wrong. Every time I powered up those three lights were on. In frustration I ended up buying new power supply and another HD4870 because I suspected a problem with one of them. Using the new HD4870 in the main PCIe slot with the knackered one in the second slot, and the new power supply, I was able to do a proper dos flash of the defunct HD4870. They work fine and now I have HD4870 crossfire!

I since tried the suspect power supply (Be-quiet 1000w) and it still causes the same problem, even with the new HD4870, but my new Be-quiet 850w is fine. I came to this deduction after three days of trying different combinations of graphics card positions, clearing CMOS etc with each power supply.

Not sure if you've tried to flash your HD4870 but since you've already tried a new power supply it sounds like you could do with borrowing someones graphics card to see if it works with that. Or buy a cheapo one just for testing purposes. Process of elimination and all that.
 
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