Arcade Collecting > Merit/JVL Touchscreen
I just bought 2 JVL systems, updates on 3 machines 4/22
mahkeymike:
use usb image tool
https://www.alexpage.de/usb-image-tool/
game_nerd:
thank you sir, gonna work on it tonight and try to get that 2nd encore working.
game_nerd:
So small update since it's been a couple weeks (dad life) one encore is completely functional, zero issues with it. That one is running HD2 and has the HD2 security key.
took the cpu box apart on both and replaced thermal paste, cleaned all the dust, replaced fans, etc.
The 2nd one, is 3/4 of the way fixed.. it's running an HD3 image with no security key, it gives a nag about no key, but if you hit the screen it continues booting.
Funny thing is, even though the display on the touchscreen is trashed, the touch part still works. I had the original screen and a computer monitor plugged in simultaneously, and the touch inputs on the messed up screen will work and load/play games.. just have to guesstimate where you're touching on the screen. Kinda works though for testing purposes.
Does anyone think this thing is repairable? has anyone taken these screens apart? I did and I didn't see any driver boards like the ones I see on google. The only board with a 30 pin connector was connected to the ribbon cables that run along the top edge of the monitor. I'd like to repair it if possible since the touch portion works just fine.. not sure if repair is an option for it though.
the older vortex I bought works just fine, zero issues with it, running Itouch 8.
I'm gonna take that one apart and clean it out as well, but don't see any obvious way to get the bezels and screen out of that thing.
I'd like to completely disassemble, sand and repaint it if possible.
lilshawn:
that MIGHT be the LCD panel itself...since the very top few millimeters looks... okay? before the lines start. at least it looks like a few rows of pixels are good then it gets messed up. if you wiggle the LVDS cable and/or connection and it doesn't change (ruling out a bad cable), i'd suspect the lcd panel driver board attached to the panel is gone. usually a bad LVDS board wont do anything like this. the lcd panel driver board is not replaceable (at least not without a million dollars worth of equipment... and requires a complete panel replacement.
since you have a pair of machines, probably the easiest thing to do would be to swap the lcd panel itself from one to the other (which you may have done already.)
if it is indeed the lcd panel, then just keep an eye out for (or purchase) a same sized LCD monitor... and disassemble it to swap it out with. the 30 pin LVDS connection is pretty universal on most monitors after about 19" so it should just plug right in.
you can verify it's exact size and requirements size by googling the panel part number and you should get a result somewhere in there from "panelook" kinda like so: https://www.panelook.com/LTM190EX-L01_Samsung_19.0_LCM_overview_8082.html
it'll have all the info you need to try and find another compatible panel. as long as it has the same resolution and uses the same data stream signal type, it'll work. (and most of them of the same size are all the same)
game_nerd:
ah, this is where having another pair of eyes to look at things helps so much.
I didn't even notice the top of the screen, but you're right, it looks perfectly fine for the first few lines of pixels, same color as the top of the screen on the lcd monitor next to it.
When I took the monitor off and completely took it apart, I wiggled around cables and disconnected what I could, thinking that may be the issue as well, connected it back up in pieces and no change. so I just put it all back together for the time being so I don't lose any screws or anything in case it was fixable.
I have swapped the working touchscreen from one machine to the other, and it works perfectly fine, also swapped the broken one to both machines, same issue with that broken one on both encores.. so it's definitely something inside the monitor itself... most likely the panel like you suspect.
I'll take it apart again and find the model # for the panel and see what I can find, maybe a suitable replacement can be had without costing a fortune.
Thanks for all your help and others in this thread, thank you too, it's all much appreciated
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version