Author Topic: Nec Pc Engine GT Black screen after replacing video cap!  (Read 239 times)

raggio252000

  • Newbie
  • *
  • Posts: 3
Nec Pc Engine GT Black screen after replacing video cap!
« on: April 11, 2015, 05:44:09 AM »
Hi there, :)

I tried to repair an old pc engine GT console.
In the past I repaired the same console without problems but now I had a problem with the video part, I replaced the video and audio caps but the video doesn't work, I have the same picture, a black screen. The sound works great!
I noticed that there was some battery leak.
I did a video and there are some pictures.
What can I do for the screen?

https://www.youtube.com/embed/vg4sYqEx73A







Slypty

  • Full Member
  • ***
  • Posts: 134
Re: Nec Pc Engine GT Black screen after replacing video cap!
« Reply #1 on: April 11, 2015, 01:25:27 PM »
Try replacing the two Backlight Caps (the two behind the Video Cap.)  Cut out the putty stuff with an exacto, be very careful because there's a transistor close to the very back one. 

  The Cap values for those two are 100uf 16V.  Good luck

crans

  • Newbie
  • *
  • Posts: 45
Re: Nec Pc Engine GT Black screen after replacing video cap!
« Reply #2 on: April 12, 2015, 08:08:43 PM »
your going to stress that system.

Replace them all and be done with it for 15 years
ModItAll.com

raggio252000

  • Newbie
  • *
  • Posts: 3
Re: Nec Pc Engine GT Black screen after replacing video cap!
« Reply #3 on: April 13, 2015, 06:55:14 AM »
Quote
Try replacing the two Backlight Caps (the two behind the Video Cap.)  Cut out the putty stuff with an exacto, be very careful because there's a transistor close to the very back one. 

  The Cap values for those two are 100uf 16V.  Good luck

thank you, I'll try this

thesteve

  • Hero Member
  • *****
  • Posts: 2952
Re: Nec Pc Engine GT Black screen after replacing video cap!
« Reply #4 on: April 13, 2015, 05:33:06 PM »
i can see more leaky caps in your pic