Author Topic: REPAIR GUIDE - TurboExpress/PC Engine GT: Video Fix  (Read 19008 times)

ApolloBoy

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Re: REPAIR GUIDE - TurboExpress/PC Engine GT: Video Fix
« Reply #90 on: October 28, 2010, 06:43:18 PM »
Anyone?
Quote from: Arkhan
it makes me laugh because people are like I REMEMBER PLAYIN THAT BACK IN THE DAY, MAN THAT WAS FUN.

and then I go "yeah I remember playing that 2 days ago because I still have my SNES, retard"

blueraven

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Re: REPAIR GUIDE - TurboExpress/PC Engine GT: Video Fix
« Reply #91 on: October 28, 2010, 06:55:33 PM »
First we would need a photo. If you upload a picture, It would be easier for people to instruct you. Also if the pads are gone are the traces gone as well?

[Thu 10:04] <Tatsujin> hasd a pasrtty asnd a after pasrty ASDFTERTHE PARTY
[Fri 22:47] <Tatsujin> CLOSE FIGHTING STREET; CLOSE FORU; CLOSE INTERNETZ; CLOSE WORLD; CLOSE UNIVERSUM
--
Arkhan [05:15pm]: ill brbl im going to go make another free game noone plays lolol

ApolloBoy

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Re: REPAIR GUIDE - TurboExpress/PC Engine GT: Video Fix
« Reply #92 on: October 29, 2010, 05:00:52 PM »
Finally got my camera to cooperate...

Quote from: Arkhan
it makes me laugh because people are like I REMEMBER PLAYIN THAT BACK IN THE DAY, MAN THAT WAS FUN.

and then I go "yeah I remember playing that 2 days ago because I still have my SNES, retard"

blueraven

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Re: REPAIR GUIDE - TurboExpress/PC Engine GT: Video Fix
« Reply #93 on: October 29, 2010, 07:03:33 PM »
 ApolloBoy,

These are the two areas that you are going to want to focus on, the positive terminal for the video cap in the blue circle, and the negative solder-point for the capacitor that should be under the pink oval.



On the positive side; Inside the circle is what is left of the trace, I'm assuming. In the right-side of it, is that what's left of the copper trace that led to the pad? If so try to solder the positive side of the capacitor to this. If there is enough of the trace left, but you cant get the leg of the capacitor to attach to the delicate trace, solder a very thin wire like 24 AWG or smaller on one side to the trace and on the other side to the positive leg of the capacitor. If the trace is too far gone, try to attach the positive leg of the capacitor to the hole that I have highlighted with a black dot inside of the blue circle.

On teh negative side; Veeeery carefully scrape with a 1/16" screwdriver in the area under the pink oval. I did this on my express and I saw a solid copper line leading up to the pad. You may want to do the wire trick again. I'm not sure if this is a specific area where you need to ground the cap.

I hope this helps you get you system back online; people please chime in  :mrgreen:
[Thu 10:04] <Tatsujin> hasd a pasrtty asnd a after pasrty ASDFTERTHE PARTY
[Fri 22:47] <Tatsujin> CLOSE FIGHTING STREET; CLOSE FORU; CLOSE INTERNETZ; CLOSE WORLD; CLOSE UNIVERSUM
--
Arkhan [05:15pm]: ill brbl im going to go make another free game noone plays lolol

Duo_R

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Re: REPAIR GUIDE - TurboExpress/PC Engine GT: Video Fix
« Reply #94 on: October 30, 2010, 02:09:55 PM »
when I get a chance I will check my TE to see if there is another option.
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Duo_R

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Re: REPAIR GUIDE - TurboExpress/PC Engine GT: Video Fix
« Reply #95 on: November 01, 2010, 12:58:10 AM »
Apollo did you see the post on page 5 where the same issue happened?
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ApolloBoy

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Re: REPAIR GUIDE - TurboExpress/PC Engine GT: Video Fix
« Reply #96 on: November 01, 2010, 04:39:08 PM »
Apollo did you see the post on page 5 where the same issue happened?
I did, but that was only for one pad. In my case both pads were gone, so I wasn't sure what to do for the other one.
Quote from: Arkhan
it makes me laugh because people are like I REMEMBER PLAYIN THAT BACK IN THE DAY, MAN THAT WAS FUN.

and then I go "yeah I remember playing that 2 days ago because I still have my SNES, retard"

Duo_R

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Re: REPAIR GUIDE - TurboExpress/PC Engine GT: Video Fix
« Reply #97 on: November 01, 2010, 05:12:26 PM »
I used an ohmmeter, here is how the cap is connected. should just be able to wire up directly to these points.



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chop5

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Re: REPAIR GUIDE - TurboExpress/PC Engine GT: Video Fix
« Reply #98 on: November 02, 2010, 07:40:56 AM »
this has poyplexed me. it looks like the right cap prong goes into the middle pin of that tiny voltage regulator on the far right but the left pin i cant figure out. i think it goes into the bottom of the board into that blue thingy. i need to see how the circuit flows.

but yeah this is a common problem with me. the smaller a cap is the greater chance of the whole pad either coming off or solder lifting up. The cap fluid eats away at it making it very brittle. the 4.7 and the 33 uf caps are huge problems. of course the 100uf caps are biger and have more solder so no problem.

The best way for me to remove one of these caps is to use a small screwdriver and gently rock the cap back and forth where it gives way till it frictions off.  if it leaves behind its old cap legs thats gold,easier to solder onto. flipping the motherboard to rest on the case makes it easier and wont harm it.



its takes about 15 to 20 minutes to rock it back and forth. it can move real fast like a blur but it gets boring but if you close your eyes and say the buddahist sutras the time will go fast.

i shape my caps legs for soldering first:



but apollo if the soldering welds are too tiny for you to do il do it for you for free. Solder paste or flux is like gold,makes tiny welds possible :wink:
« Last Edit: November 02, 2010, 07:45:15 AM by chop5 »
AKA jetblue
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Duo_R

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Re: REPAIR GUIDE - TurboExpress/PC Engine GT: Video Fix
« Reply #99 on: November 02, 2010, 03:13:20 PM »
15 to 20 minutes? Try five seconds with needle nose pliers. Just do the twist back and forth.
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ApolloBoy

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Re: REPAIR GUIDE - TurboExpress/PC Engine GT: Video Fix
« Reply #100 on: November 03, 2010, 10:49:50 AM »
I seem to be having troubles with this. I think the trace for the negative side is gone and now I need to know what to solder onto now. The positive side is fine now, though.
Quote from: Arkhan
it makes me laugh because people are like I REMEMBER PLAYIN THAT BACK IN THE DAY, MAN THAT WAS FUN.

and then I go "yeah I remember playing that 2 days ago because I still have my SNES, retard"

Duo_R

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Re: REPAIR GUIDE - TurboExpress/PC Engine GT: Video Fix
« Reply #101 on: November 03, 2010, 11:14:35 AM »
Dud u see my post?
Add my YouTube channel: http://youtu.be/sOg93QUtlg0

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ApolloBoy

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Re: REPAIR GUIDE - TurboExpress/PC Engine GT: Video Fix
« Reply #102 on: November 03, 2010, 12:09:36 PM »
Dud u see my post?
Yes, but the highlighted area doesn't make it clear exactly where I should solder to.
Quote from: Arkhan
it makes me laugh because people are like I REMEMBER PLAYIN THAT BACK IN THE DAY, MAN THAT WAS FUN.

and then I go "yeah I remember playing that 2 days ago because I still have my SNES, retard"

Duo_R

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Re: REPAIR GUIDE - TurboExpress/PC Engine GT: Video Fix
« Reply #103 on: November 03, 2010, 12:27:46 PM »
It is a little blury but negative goes to the pin marked on the diagram of the chip marked BA.    
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ApolloBoy

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Re: REPAIR GUIDE - TurboExpress/PC Engine GT: Video Fix
« Reply #104 on: November 03, 2010, 04:26:05 PM »
It is a little blury but negative goes to the pin marked on the diagram of the chip marked BA.    
I just tried that and it still didn't work. As for the positive side, can I solder onto one of the pins on that component underneath the 100 uF cap?
Quote from: Arkhan
it makes me laugh because people are like I REMEMBER PLAYIN THAT BACK IN THE DAY, MAN THAT WAS FUN.

and then I go "yeah I remember playing that 2 days ago because I still have my SNES, retard"