(Topic ID: 149886)

Help Removing ROM

By jonesjb

8 years ago


Topic Heartbeat

Topic Stats

You

Linked Games

No games have been linked to this topic.

    Topic Gallery

    View topic image gallery

    schroevendraaiers-268_10p_(resized).jpg
    ROM-puller_(resized).jpg
    image_(resized).jpeg
    image_(resized).jpg
    image_(resized).jpg
    image_(resized).jpg
    #1 8 years ago

    I'm trying to replace a rom in my pin, and I've purchased this ROM remover: http://www.actionpinball.com/parts.php?item=EXT_IC2

    The thing is the ROM chip seem really tight. When I try to pull it out, the board starts creaking so I stop and am now checking how to proceed. Am I doing something wrong here? Any help would be appreciated.

    #2 8 years ago

    I use a small screwdriver as described here http://www.dmspinballs.com/epromswap.html

    Eric

    #3 8 years ago

    Make sure you only put it under the ic and not under part of the socket ?
    Probably sounds dumb but you never know.. that's about the only thing you can do wrong.

    Sometimes it'll make a sound when it's an old board.. as long as you are sure you only have the ic and pull up that shouldn't matter..

    #4 8 years ago
    Quoted from aeneas:

    Make sure you only put it under the ic and not under part of the socket ?
    Probably sounds dumb but you never know.. that's about the only thing you can do wrong.
    Sometimes it'll make a sound when it's an old board.. as long as you are sure you only have the ic and pull up that shouldn't matter..

    Also, make sure that the board is on a flat surface and that you're not holding the board up in the air while trying to pull the chip.

    #5 8 years ago

    Thanks, is it bad form for me to try to remove the ROM from the board while the board is in the pin? Or do I have to remove the board from the pin first?

    #6 8 years ago

    Grip it and rip it.

    Well not really. I guess if you want to use your IC puller you could use a small screwdriver do prey up a little bit on the ends then use it.
    It will be easier to do it with the board out but not needed. It's creeky because that puppy has been living in there for decades.

    Personally I just use a screwdriver and then I use it again to straighten the legs out I just bent.
    Some people don't like that round these parts

    #7 8 years ago

    Team gently twist up each end with a screwdriver reporting in. The only time I bent pins was when I tried using one of the cheap little IC pullers, but maybe I'm a dummy. I know ForceFlow won't stand for this screwdriver crap, he's too professional!

    #8 8 years ago
    Quoted from DefaultGen:

    I know ForceFlow won't stand for this screwdriver crap, he's too professional!

    Depends where they are is how they get bent. I was doing my PM and only one side was accessible, so I just put the driver in the one side, twisted, jammed, & pried it out of there...kind of like shucking a clam.

    #9 8 years ago

    Just make sure the chip is sitting in a socket and not directly soldered to the board.

    And yes, pulling it from the pin directly is fine. Easier if board is out, but it's fine either way.

    #10 8 years ago
    Quoted from Blackbeard:

    Just make sure the chip is sitting in a socket and not directly soldered to the board.

    That's a good point.

    jonesjb, go ahead and post a photo of the chip you're trying to remove.

    #11 8 years ago

    I admit to using enough force in one case that the chip flew across the room and was lost for several days until it showed up by sticking to the bottom of my foot.

    #12 8 years ago
    Quoted from ForceFlow:

    That's a good point.
    jonesjb, go ahead and post a photo of the chip you're trying to remove.

    Thanks I appreciate your help, yes I'll post a photo of my pin shortly once I'm home.

    #13 8 years ago

    These but I prefer the simple metal one.

    image_(resized).jpgimage_(resized).jpg

    image_(resized).jpgimage_(resized).jpg

    image_(resized).jpgimage_(resized).jpg

    #14 8 years ago

    Those two 3M parts are not chip pullers. They are chip clips, used to access the legs of the chip with clip leads or a probe easier.
    --
    Chris Hibler - CARGPB #31
    http://ChrisHiblerPinball.com/contact/
    http://webpages.charter.net/chibler/Pinball/index.htm
    http://www.PinWiki.com - The Place to go for Pinball Repair Info

    #15 8 years ago

    I bent the end of one of those pocket screwdrivers about a half inch and use it to pry under the ROM at each end a little at a time. Works like a charm!

    1 week later
    #16 8 years ago
    Quoted from ForceFlow:

    That's a good point.
    jonesjb, go ahead and post a photo of the chip you're trying to remove.

    So here is the chip I'm trying to remove... It's pretty tight. Any help would be greatly appreciated!

    image_(resized).jpegimage_(resized).jpeg

    #17 8 years ago

    The creaking you hear is very normal when they are tight as they actually should be. Being the old timer that I am, I heard this all the time taking memory chips out of PC's. Get a small flat head screw driver and slowly insert it between the chip and the socket. Then twist left and right slowly. Then push it in further. Slowly, twisting as you go. You can lift a bit also. You will see it start to come out. Don't worry about bending the pins a bit. You can easily straighten them back out.

    #18 8 years ago
    Quoted from jonesjb:

    So here is the chip I'm trying to remove... It's pretty tight. Any help would be greatly appreciated!

    The chip puller from your picture is too small to be of any use, like others have suggested just use a screwdriver. I personally would never pull an IC from a board that is still in the system since it puts unneccesary stresses on several parts of the board. I see that there is nothing covering the IC window, not sure if you recently removed the sticker or if it was like that for awhile, but having the window exposed like that can result in corrupttion of the data stored in the IC.

    #19 8 years ago

    Yep, small screwdriver and twist, I always do it that way, just be careful, I did back in the day screw up a cpu because the screwdriver went in too far, and scratched the traces under the socket.. Learned a good lesson from that one, and I have never had an issue again..and remember to do it SLOWLY..

    #20 8 years ago

    Make sure the game is powered off! Also, if you want to play it safe, use one hand around the socket with a little pressure while to use the screwdriver, that way your not putting all the pressure on the whole board.

    #21 8 years ago
    Quoted from Pin_Guy:

    The chip puller from your picture is too small to be of any use, like others have suggested just use a screwdriver. I personally would never pull an IC from a board that is still in the system since it puts unneccesary stresses on several parts of the board. I see that there is nothing covering the IC window, not sure if you recently removed the sticker or if it was like that for awhile, but having the window exposed like that can result in corrupttion of the data stored in the IC.

    The IC window was uncovered when I bought the pin last year. Is this bad? Can I just cover it now with some electrical tape?

    #22 8 years ago
    Quoted from jonesjb:

    The IC window was uncovered when I bought the pin last year. Is this bad?

    It's not good ... The chip pictured is an EPROM (Erasable Programable Read Only Memory) these are erased by shining ultra-violet light through the window. While small amounts of UV wont erase it, it could be enough to corrupt the data stored on it. You can cover it with anything including a smiley face sticker

    #23 8 years ago

    Thanks, is it too late? Or is the worst case scenario is I just replace the ROM?

    #24 8 years ago

    The rom is probably fine. But cover the window as suggested.
    --
    Chris Hibler - CARGPB #31
    Http://chrishiblerpinball.com/contact
    http://webpages.charter.net/chibler/Pinball/index.htm
    http://www.PinWiki.com - The new place for pinball repair info

    #25 8 years ago
    Quoted from jonesjb:

    Thanks, is it too late? Or is the worst case scenario is I just replace the ROM?

    If the ROM is corrupt, then screwing it up taking it out is a moot point.

    #26 8 years ago
    Quoted from rwarren28806:

    If the ROM is corrupt, then screwing it up taking it out is a moot point.

    Well, not really, since an eprom can be erased and used again.

    I was once taught to pretend I was on the moon, and I needed that chip to get back to earth, that's how careful you want to be. Also, if you can't get a screwdriver started between the chip and socket, try a small pocketknife blade.

    #27 8 years ago

    Best tool for removing socketed ROMs.

    ROM-puller_(resized).jpgROM-puller_(resized).jpg

    #28 8 years ago

    Small flathead is all you need really. I never use a chip puller for DIL packages.

    Small flat head to get under one side of the chip and between the socket house. NOT against the PCB!! Twist the flat or gently pry to start working the first end loose. Once it raises up slightly, repeat on the other end going back and forth and it comes out. If you pry against the PCB you can pull the entire socket house off.

    #29 8 years ago

    I don't like the chip pullers either. Most of the times it will result in bent pins at 1 of the sides. I use this lovely little tool:

    schroevendraaiers-268_10p_(resized).jpgschroevendraaiers-268_10p_(resized).jpg

    #30 8 years ago

    Thanks everyone for your help. I've successfully removed and updated the rom chip using the screwdriver method.

    #32 8 years ago
    Quoted from jonesjb:

    Thanks everyone for your help. I've successfully removed and updated the rom chip using the screwdriver method.

    Shhewwwww....that's a relief....
    Sorry...snarky this morning...
    --
    Chris Hibler - CARGPB #31
    http://ChrisHiblerPinball.com/contact
    http://webpages.charter.net/chibler/Pinball/index.htm
    http://www.PinWiki.com - The Place to go for Pinball Repair Info

    Reply

    Wanna join the discussion? Please sign in to reply to this topic.

    Hey there! Welcome to Pinside!

    Donate to Pinside

    Great to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!


    This page was printed from https://pinside.com/pinball/forum/topic/help-removing-rom and we tried optimising it for printing. Some page elements may have been deliberately hidden.

    Scan the QR code on the left to jump to the URL this document was printed from.