Arcade Collecting > Restorations & repair
Mappy gets a makeover
SirPeale:
That G07 will fix up nicely. One tube swap later and you'll have practically a new monitor once you rebuild it.
Spyridon:
--- Quote from: TheShanMan on February 04, 2010, 07:04:08 pm ---
I'll try to remember to check my back door tonight. Want a pic? Anything else you might want me to check?
--- End quote ---
Yeah, a pic of the back door would be great.
Spyridon:
--- Quote from: SirPeale on February 04, 2010, 08:55:12 pm ---That G07 will fix up nicely. One tube swap later and you'll have practically a new monitor once you rebuild it.
--- End quote ---
Yeah, I need to read up on tube swaps and figure out where to get the tubes.
Spyridon:
I love games that save high scores, but unfortunately, Mappy does not. Don't worry, JROK has come to the rescue with a high score hack.
It involves swapping two ROM chips
and replacing one RAM chip with a NVRAM (I used a M48Z02)
I did this but when I powered it up, I got a RAM 3 message on the monitor. Checking the power at one of the chips on the PCB, I found it was only getting 4.4V. I'm suprised the game even ran at that level. I adjusted the voltage and now the game is working again and high scores are being saved!
SirPeale:
--- Quote from: Spyridon on February 04, 2010, 08:59:30 pm ---
--- Quote from: SirPeale on February 04, 2010, 08:55:12 pm ---That G07 will fix up nicely. One tube swap later and you'll have practically a new monitor once you rebuild it.
--- End quote ---
Yeah, I need to read up on tube swaps and figure out where to get the tubes.
--- End quote ---
You can buy them brand-new, but I personally like getting them from old TVs. Ask on Craigs List and Freecycle if anyone has any woodgrain color 19" TVs. You will probably get a couple of them that aren't the right size or pin # - it happens. But those old tubes have a ton of life in them.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version