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Posted Sat May 22, 2010 10:19 AM
Posted Sat May 22, 2010 8:33 PM
Posted Sat May 22, 2010 11:00 PM
Posted Sun May 23, 2010 9:22 PM
surely someone has the power switch fix?
Posted Mon May 24, 2010 6:45 AM
Posted Mon May 24, 2010 2:36 PM
Posted Mon May 24, 2010 5:53 PM
Posted Mon May 24, 2010 6:12 PM
Posted Thu May 27, 2010 12:18 AM
I've started this thread to promote some DIY modifications, upgrades, and general repairs, that can be performed on the ColecoVision console and its accessories.
Feel free to post instructions on any modifications that you've done. Links are fine, too, preferably if you've performed the modification yourself, and can provide a little bit of a review to go along with the link. Also feel free to discuss any of the modifications listed here, or suggest ones you'd like to have included.
This is a DIY thread, a place to share and gain knowledge, to enhance the "ColecoVision Experience". Please don't advertise your services in this thread - you can create your own thread(s) for that.
I'll be posting a few instructions fairly soon for BIOS update, controller chip replacement, composite mod, and possibly more. Feel free to "beat me to the punch" on some of these.
I think that's it.
Thanks and enjoy,
Posted Thu May 27, 2010 3:13 PM
Posted Thu May 27, 2010 5:15 PM
Posted Thu May 27, 2010 6:19 PM
For the Do-it-Yourselfer Here is a guide to Controller Refurbishing
ColecoVision Controller Refurbishing.
You need the following
De-solder bulb to remove old solder
fine file or sand paper
small side cutter and needle nose pliers
Multi-meter (audible continuity test is a nice plus)
small utility knife (for removing glue and to aid in stripping wires.
Only 99% isopropyl alcohol ( the 70% stuff has water in it )
DeoxIT by http://www.caig.com/
Trying to clean a fire-button without dissembling it is futile.
1. De-solder dissemble and clean rails and slide with 99% isopropyl alcohol to remove old grease and grime.
2. Put a couple drops of Deoxit on the slide and both sides of the rail ( rail is the 3 flat extensions ) and let it sit for about 5 minutes.
3. Take the slide and carefully straddle it on a strip of paper and move it back and forth to remove any corrsion.
4. Clean the corrsion off the rails with a Q-tip.
5. Put the slide back on the rail,apply a nice thin layer of dielectric grease to protect against corrosion and friction.
7. Test with a multi-meter using the continuity setting. press button in very slowly and make sure that contact is continuos from the point where it first makes contact and being fully depressed. If the slide is damaged or rail is bent, contact can be intermitant and button is basically worthless.
8. If button tests perfect, solder it back to the controller pcb.
For the joystick contacts you NEVER want to sand the chrome plated dome, doing so would be begging for problems. The chrome plating makes for excellent contact. Desolder and carefully inspect the domes for cracks. I have seen them with such tiny cracks that unless you delsolder and hold in your fingers and gently bend and twist them, the cracks are not visible.
Contact points be lighthly sanded or filed and a drop of solder be applied and filed flat, then a drop of Deoxit be applied to condition the contact point, domes carefully inspected and replaced if cracked.
1. pull keypad out of the socket
2. clean the contact points with DeoxIT and a Q*tip
3. slide a piece of card stock with Deoxit in/out of the keypad socket several times to get grime and corrosion out.
If the keypad doesn't work you may have to separate the layers. The contact points between the layers get corroded occasionally.
For cords and solder points I recommend that wires be cut from pcb and all old solder and glue removed. Then throw away those slide on clips, those things are worthless. Remove any glue on the type of pcb that has the thru holes. Strip and resolder all the wires directly to the controller pcb. No need to put any hot glue on the wires. The grommet protects the wires from being pulled lose from the pcb.
Quick fix for joystick contacts is a strip of paper or poster board with DeoxIT ran back and forth between contact and dome while pushing down on dome. Not really recommended!
If your going to go to all the trouble of trying to recondition a controller, you should go all out so that it continues to work for a long time, not half-way so that 2 weeks later your tearing it a part again.
Edited by 5-11under, Thu May 27, 2010 6:20 PM.
Posted Thu May 27, 2010 8:34 PM
Posted Fri May 28, 2010 7:03 AM
Posted Tue Oct 12, 2010 7:55 PM
Posted Wed Oct 13, 2010 6:15 AM
Sorry, I've never done a mod like this before. I don't like the layout of the original controller, so I haven't gone much beyond just cleaning them using the method shown a few posts up. Anyone else?
I have performed a microswitch joystick mod on one of my bad controllers. I found the tut on youtube. It works great but I cannot use the existing spring so the joystick feels loose. Have you performed a microswitch mod before?
If so what did you use for a spring to keep the joystick firm?
Posted Wed Oct 13, 2010 8:47 AM
Posted Wed Oct 13, 2010 9:44 AM
I usually use the tester included in the Atarimax USB or SD multicarts... but you need at least some control to get to it. Otherwise I'll use a "Final Test" cartridge that you can find here: http://www.theadamre...ware/index.htm. You could put it as "game" 001 in a USB multicart, and you'd only need a fire button to activate it.
For those who can't tell if they have flakey controllers or a bad controller chip, what pins could one hook up to a voltmeter off the controller plug to see what readouts I should get? I have 2 regular + 2 super action controllers, even after a good cleaning, still act weird.
Posted Wed Oct 13, 2010 3:30 PM
Posted Wed Oct 13, 2010 6:44 PM
The composite mod listed earlier in this thread is the same one benheck has used (except the audio tap, of course, as described). I don't have a schematic, although it would be easy to make. Just follow the connections. The transistor is an NPN transistor: http://www.reprise.c...or_pinouts.asp.
5-11under: I just downloaded your guide on how to modify a ColecoVision for AV and I would like schematics for the amplifier circuit in that mod so that I can understand the mod completely. Will build it on a tiny board
And just to make sure, it is the NTSC version in the mod? Figures it should be but want to make sure
Posted Sun Sep 25, 2011 11:19 PM
Posted Sat Oct 8, 2011 9:03 AM
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