Messages

[Console Repair/Mod Center / Re: Inconsistent/no video output from CoreGrafx unit]

@mickcris: I don't know the specifics, but I was told the solution involves changing an amp in the cable. I'm not an electronics expert by any means, so I'm not sure if this relates to what you mention about the voltage on pin 16.

[Console Repair/Mod Center / Re: Inconsistent/no video output from CoreGrafx unit]

Thanks again to everyone that has suggested ideas. After a bunch of trial and error, I believe I figured out the problem, which in turn revealed the issue was something entirely different from what I originally thought.

In terms of composite output, I do believe either the din connector or the cable itself is faulty. The cable does not fit snugly into the port. In fact, it sort of just hangs in the port as opposed to snapping in flush.

With that being said, my intent all along had been to use the RGB cable I purchased that connects via the EXT port. I discovered the reason that too was not working had nothing to do with the console or cable itself and all to do with my setup.

What I'm doing is the following:

PC Engine --> RGB Cable --> gscartsw Scart Switch --> Framemeister

It turns out there is an issue with the gscartsw switch properly receiving the video signal through the RGB cable. If I bypass the switch entirely, and just plug the cable directly into the Framemeister, I get a nice clear picture without issue.

After contacting fidde_se, who makes the cable, I learned it is a known issue and he is able to make an adjustment to my cable to make it work with the switch.

Hopefully my experience can be a good reference point for anyone planning to go down a similar route in future.

Thanks again for everyone's insight on this matter.

[Console Repair/Mod Center / Re: Inconsistent/no video output from CoreGrafx unit]

Ideally I'd like to be using the RGB out via the back EXT port vs composite.

I have to figure the issue is outside of the actual video out connectors themselves, since neither composite nor RGB are displaying any output.

Thanks for all the suggestions thus far. Wondering if there is anything on the board somewhere that may be amiss I can check??

[Console Repair/Mod Center / Re: Inconsistent/no video output from CoreGrafx unit]

So the weird thing is, I have had it working with the Turbo Everdrive no problem previously. Now, when I switch the system on, the screen is just totally blank on the TV. No picture, nothing.

I assumed it was a faulty composite cable to begin with. Just got the RGB SCART cable a day ago. It's brand new, so I doubt that it's bad. Regardless, no picture appears on the TV via composite nor RGB inputs.

I know the system is powering up, as the LED on the Turbo Everdrive lights up and blinks when the system power button is switched on.

Also just tried your cleaning suggestion and loosening the card in the slot a bit, but to no avail.

[Console Repair/Mod Center / Re: Inconsistent/no video output from CoreGrafx unit]

Whether it is helpful or not, here are some photos.

If there is any specific areas I can take a close up photo of, please let me know.


https://dl.dropboxusercontent.com/u/96921/pcengine/IMG_0179.jpg
https://dl.dropboxusercontent.com/u/96921/pcengine/IMG_0180.jpg
https://dl.dropboxusercontent.com/u/96921/pcengine/IMG_0181.jpg
https://dl.dropboxusercontent.com/u/96921/pcengine/IMG_0182.jpg

[Console Repair/Mod Center / [SOLVED] Inconsistent/no video output from CoreGrafx unit]

I recently purchased PC Engine Coregrafx unit, which is experiencing some odd issues with video output.

Basically what happens is, more often than not, when I power on the system I don't get any picture on the TV.

I'm using an original power supply with the system and can confirm it is technically all working, as I have got the system displaying a very small handful of times and have played games without issue. But invariably I'll come back to start it up again and be treated to a blank screen. Flicking the power on and off obviously doesn't help. I've opened the unit and given the insides a clean as well for all the good it's done.

I've tried multiple TVs and various inputs on those TVs to rule out a bad port. I have tested with both the default composite cable the unit came with and an RGB cable the plugs into the EXT port on the back of the unit. In both cases, the result is still the same.

Any help or opinions would be greatly appreciated.

Thanks very much in advance!