LED's on inverter card not working (A31 15")

R, A, G and Z series specific matters only
Post Reply
Message
Author
L. Unruh
Posts: 7
Joined: Fri Aug 08, 2008 11:15 am
Location: Oklahoma City, Oklahoma

LED's on inverter card not working (A31 15")

#1 Post by L. Unruh » Wed Aug 20, 2008 4:19 pm

i resolved an LCD problem of thin vertilcle lines across the entire display by reseating the LCD cable on the MB.

this cable also attaches to the inverter. the two LCD's on the inverter (battery/charging indicator and sleep/hibernate indicator) are no longer working.

i've checked and reseated the lcd cable plug into the invertor several times, and have been sure it's screwed in correctly with the metal contact point behind the screen.

cannot get the LED's to light.

the LCD is fine, bright and no issues.

i don't know if the inverter needs replacement, or if it's the ribbon LCD cable.

Much appreciate thoughts.
L. Unruh in OKC, Ok.
A31, R61e, T23, W700
lwunruh@sbcglobal.net

sjthinkpader
Senior ThinkPadder
Senior ThinkPadder
Posts: 2908
Joined: Tue Jan 22, 2008 8:29 pm
Location: San Jose, CA

#2 Post by sjthinkpader » Thu Aug 21, 2008 9:41 pm

I had this happened to my A31 and it was a transistor on the MB after changing both the cable and inverter.
T60p 2623-DDU/UXGA IPS/ATI V5200
T60 2623-DCU/SXGA+ IPS/ATI X1400
T43p 2668-H8U/UXGA IPS/ATI V3200
R50p 1832-NU1/UXGA IPS/ATI FireGL T2
X61t 7762-B6U dual touch IPS/64GB SSD
X32 2673-BU6/32GB SSD
755CDV 9545-GBK Transmissive Projection LCD

matermark
Posts: 24
Joined: Wed Aug 27, 2008 2:52 pm
Location: Buffalo NY

#3 Post by matermark » Wed Aug 27, 2008 4:58 pm

Do you have a battery installed? I had the inverter board LEDs out and couldn't figure out why--I had the battery removed.

Post Reply
  • Similar Topics
    Replies
    Views
    Last post

Return to “ThinkPad R, A, G and Z Series”

Who is online

Users browsing this forum: No registered users and 5 guests