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Arcade Collecting => Merit/JVL Touchscreen => Topic started by: brtlkat on September 02, 2021, 06:59:51 pm

Title: Repairing touch screen glass ribbon cable type
Post by: brtlkat on September 02, 2021, 06:59:51 pm

Has anyone ever repaired the ribbon cable that connects to the touch screen glass. I have one that pulled off it has 4 little tabs and looks like it was maybe taped down or some kind of glue. Looks like it came off clean. So i was wondering if conductive epoxy would work to reattach this to the glass tabs or is there a better method, Other then replacing it. Thanks

Title: Re: Repairing touch screen glass ribbon cable type
Post by: mahkeymike on September 03, 2021, 07:53:06 am

Ive accidently ripped the cable off an overlay. The film layer is still conductive (ive tested with multimeter) so in theory, some conductive epoxy should work. I would be careful to clean both surfaces, but make sure to not use any solvent that might dissolve the conductive film layer. Anyway, good luck and let us know your results.

Title: Re: Repairing touch screen glass ribbon cable type
Post by: lilshawn on September 03, 2021, 07:08:57 pm

i've had about a 10% success rate in trying to use conductive silver pen stuff to fix overlays.

https://www.amazon.ca/MG-Chemicals-842AR-P-Silver-Conductive/dp/B01LYXQE0M/ref=pd_bxgy_2/143-8731798-6216536?pd_rd_w=8H7nY&pf_rd_p=8c482a45-7c0f-409b-937c-741a67b11a67&pf_rd_r=FR05G1C6BKASTSSR7G6H&pd_rd_r=9e8ab5ff-a634-42e2-afa5-4905647073ea&pd_rd_wg=FzIAz&pd_rd_i=B01LYXQE0M&psc=1

Title: Re: Repairing touch screen glass ribbon cable type
Post by: brtlkat on September 03, 2021, 08:31:43 pm

This is what I'm going to try to repair it with.  I will report back.  https://conductivex.com/Graphite-Filled-Electrically-Conductive-Epoxy-EMI-RFI-Shielding-Adhesive-Military-Grade-Heat-Cure?cmp_id=402219008&adg_id=23421667208&kwd=&device=c&gclid=Cj0KCQjw7MGJBhD-ARIsAMZ0ees7JdCdNPAUUkLHx4ngp76xqg7NPSXDaJp0GrvAQWWVlBD0xVbtCrkaAkiYEALw_wcB

Title: Re: Repairing touch screen glass ribbon cable type
Post by: lilshawn on September 04, 2021, 12:05:39 am

>Volume Resistivity   43 ohm. cm

this might be a problem. it might not be...but you should know... MG chemicals specs their various conductive pens as...

silver - Volume resistivity: 0.0001 Ω/cm
nickel - Volume resistivity: 0.0068 Ω/cm
carbon - Volume resistivity: 0.46 Ω/cm

your graphite pen may introduce a significant skew to the sense lines of the panel at 43 ohms

Title: Re: Repairing touch screen glass ribbon cable type
Post by: DaddyLongLegs on September 23, 2021, 07:48:56 am

Where exactly is this ribbon? I am wondering if it's why my touch screen doesn't work 50% of the time on bootups.