REPAIR GUIDE - TurboExpress: Total capacitor replacement chart

[farankoshan]

i only have 2, 1 with a perfect screen.
the other perfect screens i have seen were units i fixed for others. (all the ones fixed for others)

One day, stevo! One day! You've helped me so much over this thread, man... but, yeah, I have to send my dead-screened Express to you one day.

Until then, I've managed to get to the Sound Test debug of Blazing Lazers, purely on audio alone... good tunes. Gotta admit, the TurboExpress still does that job right with the great 47uF caps doing their job.

[phipscube]

I wonder if there is a way to make dead pixels work again on PCE GT/TGE?... Mine is sometimes a colour, not just black, so i'm wondering if its just a bit "stuck". I've seen programs that flash flat colours quickly to bring back stuck pixels on PC monitors. It would be cool if some kind of homebrew program existied for PCE to try this (loaded up on a flash cart of some sort like the Neo Power 128M).

[Necromancer]

I've seen programs that flash flat colours quickly to bring back stuck pixels on PC monitors. It would be cool if some kind of homebrew program existied for PCE to try this (loaded up on a flash cart of some sort like the Neo Power 128M).

Rover made such a color cycling program. 

[phipscube]

That's awesome! I'll give that thread a good read, it looks very interesting, Thanks necromancer

[phipscube]

If any of you guys are interested I posted some photos of my efforts replacing my caps over on Amibay where i'm a regular, I also plugged this awesome site a bit : -

http://www.amibay.com/showthread.php?p=212375#post212375

[BlueBMW]

If any of you guys are interested I posted some photos of my efforts replacing my caps over on Amibay where i'm a regular, I also plugged this awesome site a bit : -

http://www.amibay.com/showthread.php?p=212375#post212375

Nice writeup   That one guy had never heard of a portable PC engine!?   

Hopefully that mod chip will arrive soon so you can really be playing in style!

[phipscube]

If any of you guys are interested I posted some photos of my efforts replacing my caps over on Amibay where i'm a regular, I also plugged this awesome site a bit : -

http://www.amibay.com/showthread.php?p=212375#post212375

Nice writeup   That one guy had never heard of a portable PC engine!?   

Hopefully that mod chip will arrive soon so you can really be playing in style!

Thanks mate Yeah that guy not knowing about a "Handheld PC engine" tsk tsk! Not sure if he was pulling my leg so replied very neutrally.

I do hope the mod chips get here soon, i'm itching to get cracking. Probably not too much longer to wait now

[farankoshan]

Congratulations on the fix! It's real good to see GTs/Expresses work just fine after a cap replacement.

[farankoshan]

Guys, I just noticed now, and I'm a little confused. On this thread (Turbo Express Cap Replacement Chart), the very helpful chart says that bringing up the 33uF 6V cap to a 47uF 6.3v cap will improve the speaker audio.

But on this thread:
http://www.pcenginefx.com/forums/index.php?topic=702.0

The audio fix comes from replacing the 100uF 6V caps.

Are they both for audio? Or has one of the guides been made obsolete?

[thesteve]

both are coupling caps, in the audio circuit.
33uf are stock.
47uf and 22uf are much more common and both work equally well.

[farankoshan]

I see. Thanks for clarifying, Stevo! Good caps for good sound. Makes sense to me.

This forum continues to be the friendliest, & most helpful NEC-related one around.

[Alexander78]

Hello people ! I'm new, I'm italian, sorry for my english ....

I have a PC Engine GT  this guide goes well for the PC Engine GT ?

 What type of SMD (caps) should be used ?

What are the best smd caps to use?
 ( example: polyester, polypropylene or ceramic ? )

[thesteve]

ceramic are best.
tantalum come in larger sizes

[HercTNT]

With capacitors coming in so many varieties, does one type excel in say an audio environment more than another? Or a game system? and so on.... I guess what I mean is for example, if your gonna recap a hand held console, does one capacitor have an advantage over another?  measurable improved battery life or cleaner picture and sound.......

[Alexander78]

ceramic are best.
tantalum come in larger sizes

Thanks thesteve, so  ceramic are the best, then I will use these.

I want to replace all smd caps of the my Pc Engine Gt (version jap)

I hope not to do stupid things on the GT.

This tutorial in this forum i think That It Is Also useful for the PC Engine GT (Jap version)
 and not only for the Turbo Express,   is not it  ?