(de)Soldering of rom chips?

Discussion in 'Dumping and Backing Up Your Games and Prototypes' started by copywizard, Mar 2, 2014.

Watch Thread
  1. copywizard

    copywizard <B>Site Supporter 2014</B>

    Joined:
    Apr 18, 2013
    Messages:
    99
    Likes Received:
    3
    Hello,

    i have no idea if this is the right part of the forum to ask but here goes.

    i would like to start creating my own repro,s for the NES i have everything set like the Programmer the right eproms and a donor cart.

    but i would like to know if i could use a heat gun that is digitally programmable to a certain degree (F./C.) to remove the roms from the NES Donor PCB?
    I have done this before but after i did not get it to work anymore.

    i heard PCB material could withstand alot of heat but could it be possible when i (de)solder chips using this method i could be harming the PCB also?
    i,am thinking of buying a simple desoldering tool of Ebay but then i have to wait along time for it to get shipped to me.

    so to sum it up could/would a PCB be damaged from using an heat gun that is digitally precise in temperature and that i can adjust with 10 Degrees C. up/down with the push of a button?

    thanks for the answers!
     
    copywizard, Mar 2, 2014 Report
    #1 + Quote Reply
  2. Viper

    Viper Rising Member

    Joined:
    Mar 28, 2011
    Messages:
    51
    Likes Received:
    2
    Best desoldering gun to use is the Hakko 808 desoldering gun from EBAY. Its a little bit of money but well worth it.
    If you have anymore questions please feel free and contact me.


    Viper
     
    Viper, Mar 2, 2014 Report
    #2 + Quote Reply
  3. copywizard

    copywizard <B>Site Supporter 2014</B>

    Joined:
    Apr 18, 2013
    Messages:
    99
    Likes Received:
    3
    thanks viper but thats a bit to much money for me because i,am just trying to get this off the ground i don,t even know if it will work! :)

    i just want to try it as an hobby and not making any or much money on it or something.

    i have seen some cheaper desolder devices on ebay that i could try but before i do i would like to know if the way i have tryed before with the heat gun should work to or not?
     
    copywizard, Mar 2, 2014 Report
    #3 + Quote Reply
  4. copywizard

    copywizard <B>Site Supporter 2014</B>

    Joined:
    Apr 18, 2013
    Messages:
    99
    Likes Received:
    3
    bump?
     
    copywizard, Mar 10, 2014 Report
    #4 + Quote Reply
  5. Riki

    Riki Peppy Member

    Joined:
    Sep 2, 2013
    Messages:
    313
    Likes Received:
    5
    Riki, Mar 10, 2014 Report
    #5 + Quote Reply
  6. ASSEMbler

    ASSEMbler Administrator Staff Member

    Joined:
    Mar 13, 2004
    Messages:
    19,394
    Likes Received:
    995
    Take the board and mask off everything but the chips you want to remove. (use tin foil,double it up or use food service double thick)

    Buy a $9 heat gun from harbor freight or wherever you get cheap electronics.

    Go outside as lead is bad.

    Set the heat gun to the correct temperature for tin/lead. For modern electronics, it will need to be much higher as there is no lead anymore.

    Heat the board and use a flat head screwdriver to left the chips off. Usually chips will just fall out.

    Clean the contacts, insert a chip socket or the new chip.

    Apply flux and solder paste to the legs sticking out the back of the board. Bend one or two of the legs so the chip won't fall out.
    Don't skimp on the paste as it's mostly flux.

    Heat the board with the heat gun and melt the solder paste.

    Done!
     
    Last edited by a moderator: Mar 10, 2014
    ASSEMbler, Mar 10, 2014 Report
    #6 + Quote Reply
  7. GoodTofuFriday

    GoodTofuFriday Site Supporter 2015,2016,2017

    Joined:
    Sep 1, 2013
    Messages:
    498
    Likes Received:
    194
    I've been using just a soldering iron and desoldering braid with plenty of flux as I'm on a veryyy tight budget... Never had an issue with it though, chips fall right out.
     
    GoodTofuFriday, Mar 10, 2014 Report
    #7 + Quote Reply
  8. copywizard

    copywizard <B>Site Supporter 2014</B>

    Joined:
    Apr 18, 2013
    Messages:
    99
    Likes Received:
    3
    hmmm thx assembler i have do that trick with the tin foil before with some x360 rrod and ps3 with ylod not tought about that but ill try that
     
    copywizard, Mar 11, 2014 Report
    #8 + Quote Reply
  9. Kaicer

    Kaicer Site Supporter 2014

    Joined:
    Mar 24, 2012
    Messages:
    555
    Likes Received:
    5
    Kaicer, Mar 13, 2014 Report
    #9 + Quote Reply
  10. copywizard

    copywizard <B>Site Supporter 2014</B>

    Joined:
    Apr 18, 2013
    Messages:
    99
    Likes Received:
    3
    i just orderd on exactly like that kaicer lets just hope it works as well as i would like it to :)
     
    copywizard, Mar 13, 2014 Report
    #10 + Quote Reply
  11. hamburger

    hamburger Spirited Member

    Joined:
    Apr 10, 2012
    Messages:
    180
    Likes Received:
    1
    Those are pretty good but remember not to press too hard on the PCB, it's easy to scratch/damage them. Also if it's an old PCB you might want to get some fresh solder flowing on the points before you desolder them. Can make it a lot easier/cleaner.

    Also if you're THAT cheap they're $9 on aliexpress.
     
    Last edited: Mar 18, 2014
    hamburger, Mar 18, 2014 Report
    #11 + Quote Reply
sonicdude10
Draft saved Draft deleted
Insert every image as a...
  1.  0%

Share This Page