MSX Palcom Issue

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Van Manuel

Ascended (17496)

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18-04-2020, 00:35

Great news! Thanks for keeping us updated Smile

Van sdsnatcher73

Paragon (1507)

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18-04-2020, 08:03

Great news indeed! Glad we could be of help.

Van TheClash603

Rookie (31)

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21-06-2020, 19:00

Well it was fun while it lasted... after a few weeks of play, the image on my MSX Palcom games is now distorted. There are lines going through the image, making the games unplayable. When I play a cartridge game, everything works fine. If I play the LD player separately, it also works fine. The Call LD function still works as well, the game will boot and let me control it even with the garbled image. Any suggestions here? I'm guessing capacitors need to be replaced?

This is how my picture looks now:

Van TheClash603

Rookie (31)

afbeelding van TheClash603

07-07-2020, 21:00

One quick bump in case there are any suggestions?

I know a guy that has done cap replacement on other systems for me, I'm hopeful this is a similar type of fix. Do MSX need caps replaced often, or is there another common underlying cause for most faulty systems?

Van sdsnatcher73

Paragon (1507)

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08-07-2020, 09:10

Sounds like a good idea to check capacitors. Check the signal path of the video input on the MSX up to the VDP, must be in there somewhere the picture gets distorded (might even be the connection of the video in connector to the mainboard has come slightly loose).

Van TheClash603

Rookie (31)

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08-07-2020, 17:23

Thanks for the advice! I will admit I am entirely incapable of any repair work... but i can provide your guidance to my buddy who is much better at this type of stuff.

Out of curiosity, is there anyone on the forums located in the U.S. that does repair work? It is always good having a network of dependable people who can help with these types of issues. On some other game forums I was on before they shut down (damn you Facebook!), there were guys who would do repair work for trade/a fee.

Van sdsnatcher73

Paragon (1507)

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08-07-2020, 18:37

Well I am incapable of repairs myself as well. But logic thinking I am good at. The logic about the advice is of course LD output is fine (you tested it individually), MSX VDP output is also fine (tested with other non LD games). So it is either the signal being distorted in the path from connector to VDP or worst case the VDP input is busted. First checkING the signal arrives correctly is a logical step.

Van TheClash603

Rookie (31)

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17-08-2020, 08:43

Quick update: I bought two PX-V60s and both worked like a charm. One was new old stock and it ran like the day it was made. I also bought a "junk" unit with no keyboard for next to nothing and it worked perfectly too.

My sample size is pretty small, it could be dumb luck... but i wouldn't recommend touching a Pioneer PX-7 if you are trying to play the Palcom LD games. I was 0 for 3 with those computers.

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