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Re: MoBo Memory Power Bypass
Posted: Wed Apr 29, 2015 12:47 pm
by nige2000
see the caps on the left of the choke its the one nearest the ram sticks
you will see a plus sign
on the underside i connected the supercap
you wont have room to put underneath so probably replace the existing cap on topside
use continuity on the multimeter to determine which is + and -
- is marked with a stripe on the caps
Re: MoBo Memory Power Bypass
Posted: Wed Apr 29, 2015 4:48 pm
by Sligolad
Great stuff Nige, that all makes sense.
I have some clearance under the Mobo so I could lift the Mobo and solder to the underside solder points and sleeve those long legs on the Cap so that it extends out and sits just outside the ATX connector.
Looking forward to trying this.
Cheers, Pearse.
Re: MoBo Memory Power Bypass
Posted: Sat May 02, 2015 2:58 pm
by nige2000
was able to lower ram voltage down another 0.05v :)
for even more improved clarity now running 1.3v
Re: MoBo Memory Power Bypass
Posted: Sat May 02, 2015 4:43 pm
by tony
nige2000 wrote:was able to lower ram voltage down another 0.5v :)
for even more improved clarity now running 1.3v
Excellent will that upgrade be rolled out nationwide soon?!!
Re: MoBo Memory Power Bypass
Posted: Sat May 02, 2015 5:30 pm
by rickmcinnis
nige2000 wrote:was able to lower ram voltage down another 0.5v :)
for even more improved clarity now running 1.3v
1.8!
I bet you are hearing a great difference.
Why 1.8 ever?
Re: MoBo Memory Power Bypass
Posted: Sat May 02, 2015 5:44 pm
by nige2000
Sorry meant 0.05v not 0.5v
Re: MoBo Memory Power Bypass
Posted: Sat May 02, 2015 5:47 pm
by nige2000
I see on jplay you've abandoned diy and got the jcat USB stuff
Re: MoBo Memory Power Bypass
Posted: Sat May 02, 2015 8:34 pm
by Animaniac
Pearse, the excellent book I'm reading "Practical Electronics for Inventors" says to keep component leads short due to stray capacitance. Then it goes on to say this a bigger problem with sensitive and high impedance circuits.
Dan
Re: MoBo Memory Power Bypass
Posted: Sat May 02, 2015 9:07 pm
by Sligolad
Animaniac wrote:Pearse, the excellent book I'm reading "Practical Electronics for Inventors" says to keep capacitor leads short due to stray capacitance. Then it goes on to say this a bigger problem with sensitive and high impedance circuits.
Dan
Thanks Dan, I will make sure to put some serious sleeve insulation on the legs.
If they really work well then maybe I might go as far as desoldering the existing Cap and mount on the topside of the Mobo as I should have clearance in the Streacom case at 45mm long.
Cheers, Pearse.
Re: MoBo Memory Power Bypass
Posted: Mon May 04, 2015 7:18 pm
by goon-heaven
No luck here with this Maxwell cap - board wont power up.
Tripled checked polarity, + to +, - to -
MB voltages elsewhere are good, but voltage across cap only showing 0.5v, so I guess MB reg wont supply RAM AND charge the flat cap.
Disconnect cap and MB boots up fine.
Guess I will have to wait for the LM338 supply to arrive turtle post and use that to pre-charge cap for 5minutes. before turning PC on.