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[PCE/TG-16|CD/SGX Discussion / Re: Core Grafx 2 RGB picture]

Here: http://www.mmmonkey.co.uk/console/pce/rgb.htm

ok thanks I'll see what I can do with this guide

[PCE/TG-16|CD/SGX Discussion / Re: Core Grafx 2 RGB picture]

Hi thesteve!

is true, there are many guides generic  for pc-engine .... For example, for the duo or turbo Grafx etc ....
 but i can not find a specific guide for your motherboard's Core Grafx II, anyone knows one ?

anyone know where I can find it ?

[PCE/TG-16|CD/SGX Discussion / Re: Core Grafx 2 RGB picture]

The RGB output form the VCE is extremely crisp. Any softening through a converter is due to filtering in the IC design. Using a slow amp and/or caps, etc. Could be frame grabbing/digitizing device that's outputting from a frame buffer. Any number of things. You would need to provide a lot more details to get any real answers.

Hi,
 
I have the PC-Engine Core Grafx II

I would like to change the video output in RGB, I'm looking for a guide to go from "Composite Cable" to "RGB"....

I would try to make the change to the Core Grafx II. Can someone tell me a guide ??

[Console Repair/Mod Center / Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart]

ok thank you,  thesteve

[Console Repair/Mod Center / Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart]

thesteve what do I do....  I do not understand almost nothing about electronics.
Maybe solve this problem, is like finding a needle in a haystack.
The same capacitors are used with the same values and see some capacitors that explode when they are replaced it is not normal.

my technician wants information, what can I tell him to do  ? ? ? ? 
   
( thesteve aspect  your advice, to put it to my technician to try to solve my problem )

[Console Repair/Mod Center / Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart]

some good pics would be helpfull (pics of the board and the video defect)

thesteve ok, start to post link pictures ....

The PC engine now is in the lab by my technician, the photos that I have right now are all shielded in the board....

I hope that these photos can help you to understand my problem, I do not know if my board is to clean or is damaged ....

I can not do the video .... because my pc-engine Gt is in a laboratory by a technician who does not know what to do. However, when you turn on my pc-engine Gt the screen is black after a few minutes then slowly stabilizes the image screen and you can see well with good colors, Instead the audio
is very low but with headphones you feel better.

I post link my images....


link Photo high-resolution

/photo8upk.jpg

other link Photo Board high-resolution

/photo3var.jpg


other link Photo

/photo4iz.jpg


other link

/photo5ry.jpg


Even if they are photo with board  shielded I hope that can help.

[Console Repair/Mod Center / Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart]

thesteve ok, I would have pictures to show you...
 
thesteve how I can send you pictures of the my board in this forum ?
(I do not see the tool to insert the image in my posts)

can you tell me how to insert the picture ?

[Console Repair/Mod Center / Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart]

The caps that were used are "electrolytic type", what do you advise me to do thesteve ?
What information should I give to the technician ?
He replaces the caps and some explode....

only putting "the original old's the caps"  work ,  but the audio and video are not normal.


I do not understand how to find a solution to the my problem.
What would you do ?

[Console Repair/Mod Center / Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart]

my Pc-Engine Gt  has the sound down and the delay of the screen.

The electrolytic caps that I did solder on the board were of the same value as the original.

Some new caps explode because the caps in the originals time they released the liquid on the board or perhaps the my board is damaged. But how can I tell my technician to indicate where my board is damaged ?

thesteve, how can I resolve ? only with a cleaning ?

Please... What should I tell my technician do to solve the problem ? ?

[Console Repair/Mod Center / Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart]

ive been getting my ceramics on ebay from the manufacturers in 50 and 100 counts
the tantelum caps im using are the 100uf shown and i bought 1500 of them as new surplus on ebay.
all the parts i used can be bought from most on line electronics suppliers.

Hello thesteve, 


I was speechless because I can not understand the problem ...

 I did run the operation by a skilled electronics technician

 I did replace all the capacitors on the card of my PC-engine Gt (version jap).

Are been welded type smd  " electrolytic "  capacitors, all with the same value, but I have not solved the sound problem and the delay of the screen.

The technician after who performed the surgery, saw something explode capacitor

I can not understand the problem .... can you help me understand what may be the problem?

I changed all the capacitors, with  "electrolytic capacitors smd"  putting but I have not solved the problem of audio and video, can you help me ?   

(some capacitors are even exploded)

Is there anything else I should check or replace  ?

[Console Repair/Mod Center / Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart]

Thanks thesteve, BlueBMW for the info.   ;)

[Console Repair/Mod Center / Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart]

for thesteve:    great post! 

incredible these small tantalum capacitors , with these I would not problems  in closing and to mount the Gt ....
 
I asked my local electronics store here in Italy but does not sell them ....

I think they are not easy to find .... (are special)

thesteve, where you found them ?   what store ?

[Console Repair/Mod Center / Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart]

ah ok, in theory 15 years ....

but the ceramic caps are not too big to put on the board Pc-Engine Gt ?
I am afraid that the Gt is difficult mount with caps in ceramic.... (they are too large in nature)

if you put small caps smd as the original ones, I would not have trouble closing and mount the two parts Pc-Engine Gt

I want to find, the caps used in the original Pc-Engine GT  (Although I know that will not be easy)

[Console Repair/Mod Center / Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart]

the board is identical to Turbo Express, but all smd Also, just?

I'll change all the SMD  present in the board
 
for BlueBMW:   is a particular question .... but.... How old you have to wait for capacitors to change of again ????   (about)

[Console Repair/Mod Center / Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart]

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  ????

[Console Repair/Mod Center / Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart]

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 ? )