6800le 'Black Screen' - The Complete Guide: Identification, modification and reason

[just_Frank]

If voltage lowering or testing with different caps (see my previous post how to test/rank caps + I PREFER soldering) the best solution would be replacing caps. I agree it is little bit tricky operation

Lowering mem voltage should be a 2-minutes easy task ( if only I knew how much ohms to put in in order to obtain -0,05 / -0,1 volts less ), I'm curious to see how much this improves stability...

[SikaRippa]

Lowering mem voltage should be a 2-minutes easy task ( if only I knew how much ohms to put in in order to obtain -0,05 / -0,1 volts less ), I'm curious to see how much this improves stability...

Ok.. if you really want to test I calculated resistor values (using the equation shown in the guide) and get following values:

~ 9000 ohm -> 2.5 V
~ 16000 ohm -> 2.6 V
~ 60000 ohm -> 2.7 V

.. but I suggest to put potentiometer/fixed resistor (high value) in series and adjust & measure voltage in the same time !! Good luck and be careful

[just_Frank]

Ok.. if you really want to test I calculated resistor values (using the equation shown in the guide) and get following values:

~ 9000 ohm -> 2.5 V
~ 16000 ohm -> 2.6 V
~ 60000 ohm -> 2.7 V

.. but I suggest to put potentiometer/fixed resistor (high value) in series and adjust & measure voltage in the same time !! Good luck and be careful

So i put in a ~ 27 kOhms resistor, so memvolt should be about 2,62-2,65V now. The good news is that the whole thing didn't blow up , all is working normally, 3D too... The other news is that, well, I have to wait and see if BS happens again, I can not be sure about the effectiveness of the mod.

[just_Frank]

Things are getting bad...

First: I get artifacts when I reboot the PC, the characters on the bootup screen are all weird, until the SO loads the graphic card drivers.
This doesn't happen when I boot the PC for the first time in the day, only when rebooting.

Second: I get more and more BS. The only way to stop it is to open the case, remove the capacitor and replace with another. It seems like then enhanced capacitor modification stresses a lot (!) the capacitor added. All capacitors I tried seem good the first time, but their "performance" and stability decrease with time ( a few days ).

Removed capacitor can be "recycled" putting them on the card again after some time. This IS strange...