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AL01

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Posts posted by AL01

  2. Posted

    I don't have another dead DMG nor do I have intentions of starting a chain reaction in which I repair every parts console I have....

     

    This is my parts Gameboy w/ a bad screen. I have heard that people have successfully shoved GBP lcds into a DMG.

     

    GBC lcds are cheap....

     

    Thanks for the info. I

     

    really do appreciate it.

     

    Al.

  3. Posted

    UPDATE: The screen is toast. I have removed it from the Gameboy....

     

    Either I can replace the screen with one from another DMG, Pocket.... Or?

     

    And this is a board that was replaced by a fully functional top board. This is from a parts GB that only has a bad screen... Nothing else.

  4. Posted

    Hello guys n' gals....

     

     

    I have a DMG Gameboy with a screwed up LCD.

     

    The right part is darker than the left and it has a horizontal line.... (I think I bent the H/V ribbon cables too much...)

     

    Could it be replaced???

     

    The LCD is custom, but I have been able to find simmiliar screen sizes and resolutions on the 'Bay...

     

    I'd try to get a Gameboy Pocket LCD if I could find them.

     

    Probably a Color/Advance LCD wont fit?

     

    Any options?

     

    Thanks....... Al.

  5. Posted

    It may just NOT be the Nes... The Nes can handle an X amount of sprites at one time, if it goes over that number then you have flicker. the 2600 does this and I have heard that the Famicom does this a lot with Gimmick!.

     

    Anybody have any idea as to why this is doing this? I figured it might be the pin so I swapped it with a new one even though the pin in it seemed fairly new. Same thing. I swapped from RF to AV and same thing. I use a CRT tv that works fine on my other nes systems. So it is not the tv, not the cables, and not the pin connector.

     

    You can see when Mario stands still there is a horizontal bar that rolls down the screen and shows through Mario. You can also see the bottom screen jumps. Please ignore the at dark horizontal lines as those are recorded via my camera and don't show up on the TV.

     

    You can also see the Piranha plant glitches as does the other enemies.

     

    It seems like the more enemies around Mario the more the screen jumps and glitches as well.

     

    https://youtu.be/tZw5A2zbzuQ

     

    Does it do this with less graphically intense games?

  6. Posted · Edited by AL01

    It may just NOT be the NES... The NES can handle an X amount of sprites at one time, if it goes over that number then you have flickering. the 2600 does this and I have heard that the Famicom does this a lot with Gimmick!.

  7. Posted

    My Atari used to have a similar problem. The chips were NOT the issue. Check your resistors with a multi meter and make sure that your connections and solder joints are protected and clean. If you can, please remove the RF box and that red thingy and the connector for the now unwanted RF cable. Your issue is coming from multiple things. But Ataris are getting around 30 - 35 years old, so they are in need of new caps and resistors. No worries, more than likely it is NOT a chip.

  8. Posted

    If you're not down to mess around with the cartridge board, I would recommend buying another DKC3 cart.

     

    I would start with Ebay.

     

    TBH I am incredibaly paranoid about this. I bought the cart in like new condition. I cannot afford to have carts die when they turn 20. I have a 39 year old copy of Breakout, (I checked the board - 100% sure about its age), and it still works wonderfully,.

  11. Posted · Edited by AL01

    Some were by the wire that I needed to connect to that area of resistors. I replaced the crystal with a new one and I replaced all of the capacitors and 2 chiclets. I highly recommend the AV mod because apparently, (after talking to somebody who repairs game systems for a living), many RF modulators on the 2600 are starting to die out.

    Specifically, I checked every resistor - whichever ones were dead, I replaced. I had to eventually send the board to a pro though, but I do have a decent idea of what he had done in order to solve this odd problem. He pretty much did what I was able to do, just at a more advanced level of proficiency.

  12. Posted

    It is VERY possible there is a bad trace. I had a game that had a popped trace under the solder joint. basically it was inconsistent so at times it would just load black screen and at times it would load w/glitches and at times freeze.

     

    As far as bad roms go I personally have only had bad roms for the nes and those always loaded w/messed up colors that resembled power issues, very rarely showing any graphics that resembled a title screen ever.

     

    From what he is telling me it sounds more of a bad trace issue in my opinion. I have seen on certain games that need sram that will load but graphically messed up if sram is not detected.

     

    That's why I said initially just swap the mask rom to a donor and if it works you know it was either the PCB bad trace or the sram. If it didn't work then you know the problem was the mask rom.

    I will do my best to check Friday or Saturday. Thanks for the help.

  13. Posted

    Unless the game uses SRAM for game code (very rare in SNES games), then the only answer here is the Mask ROM.

     

    Do you by any chance have another SNES to test the game on?

    No, I do not. It did used to work on my SNES just fine though.

  17. Posted · Edited by AL01

     

     

    He said the game boots to a black screen and the intro music plays. Sometimes the game displays the anti-piracy screen. I don't think the problem lies in the edge connector/trace area. It sounds more like a ROM/SRAM problem. The SNES cartridge slot is what some would call "OneBus", everything in the SNES has to share and take turns with the cartridge slot. A broken trace or a failing Mask ROM usually renders the game unbootable.

     

    This is unlike the NES which has two ROM buses in the cartridge slot, one for the CPU and one for the PPU. In a system like this, it's always possible to have a bootable game with graphical glitches. The PPU doesn't care if it's receiving graphics or not, but the CPU must get usable code or it can't work. The CPU also generates the music in the NES.

    And that's where I get confused... OK, here is what I am getting right now. Turn snes on, black screen with a few little white flashes, (like morse code), I wait 4 seconds and the intro music plays, and that's it. The white flash looks like an underscore.

  18. Posted

     

     

    He said the game boots to a black screen and the intro music plays. Sometimes the game displays the anti-piracy screen. I don't think the problem lies in the edge connector/trace area. It sounds more like a ROM/SRAM problem. The SNES cartridge slot is what some would call "OneBus", everything in the SNES has to share and take turns with the cartridge slot. A broken trace or a failing Mask ROM usually renders the game unbootable.

     

    This is unlike the NES which has two ROM buses in the cartridge slot, one for the CPU and one for the PPU. In a system like this, it's always possible to have a bootable game with graphical glitches. The PPU doesn't care if it's receiving graphics or not, but the CPU must get usable code or it can't work. The CPU also generates the music in the NES.

    Sometimes as in three times compared to the hundreds of tests I have done. First time was when I attempted to first boot the game, second was when I called a game store after leaving the snes off for a minute, and third was after a bunch of moving and on/off cycles.

  19. Posted · Edited by AL01

    The DKC3 cart has been unaltered. I will not have time to check it out further... I personally do not own any donor carts. I do not own a DKC1 cart either. Where I live now SNES games are too dang expensive and I have been getting into NES and the Dreamcast. I have determined that there are no bad traces on the broad. I did see mere spots, but they should not effect the traces in any matter. It could be bitrot. But on a barely 20 year old cart? I own games that are 30 - 39 years old and yet they work fine. I have a majesco release MMX cart that's gone through hell and back and yet it still works.

     

     

    I think your best option here is to open a DKC 1 cart up and do pin traces on every single pin to determine if 3 has a broken trace and be aware they could lead to more than 1 spot especially check the sram. When you find the bad trace run a wire. You said above one of them leads to nothing, if that leads to something on DKC1 you pretty much found your problem.

     

     

    Yeah it is less likely the extra sram will cause problems. I have only seen problems with sram for games that don't use it.

  20. Posted

    The mask rom is the bottom right chip with MX on it (36pins) biggest chip. That is not the DKC 3 pcb right? That is the donor? I only ask because that board is a 64K sram which is what maddens would be instead of the 16K that DKC 3 is.

     

    You have the battery, to the right is the mad -1 chip right of that is the sram, chip below sram is mask rom and left side under batter is CIC chip. It's all kind of written on the pcb.

     

    If you think DKC3 has piracy check then that 64K donor might cause problems.

    SNS-A3CE-0-pcb-front.jpg

  23. Posted

    I tried bad traces... One of them leads to nothing, so when I attempted to repair it the game would not work in that configuration. Simply put, the game worked for a while and after storing it in a nice cool room for 4 months and the thing showed a piracy screen. I cleaned it, etc. and after attempting to turn it on a million times, I got a black screen that would play the first 10 seconds of music and that was it. It shown a piracy screen two more times after that but now it just shows a black screen and plays some music. I did take the PCB out of its shell and it made no difference.

     

    So.. eh... Which one is the mask rom??

     

    EXTRA INFO. : In DKC 123 the SNES does a checksum of sram, if the amount is invalid, a piracy screen shows up.

     

     

    SNS-A9GE-0-pcb-front-9618.jpg

  24. Posted

    Hi guys, my SNES works just fine, but when I put DKC3 in it now, it shows a black screen and plays the intro music. I have tried MANY things... Sometimes it even shows a piracy message, but that has happened thrice in the many times I have tried to make the games work.

     

    I cleaned the game, I went through any shady solder joints, I tried to fix broken traces, I replaced the save battery... What else can i do??

     

    (Maybe a SRAM chip replacement??)

     

     

    Thanks for the Help, Al

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