Arcade Collecting > Merit/JVL Touchscreen
Megatouch Force Boot problems
obcd:
It's a long shot, but any chanche you could try it with another ps2 keyboard?
I remember some years ago we suddenly had pc's that refused to work together with cherry keyboards.
Those keyboards worked perfectly with other pc mobo's.
If that's not the problem, it could indeed be the pc mobo that is freezing. This is usually due to the capacitors surrounding the cpu that become bad. Sometimes you can notice that the normally flat end of the capacitors is slightly bended outside, like it's going to burst open.
They are difficult to replace as they are connected to some of the inner power planes of the motherboard. Those dissipate the heat you add with your solder iron so that the solder temperature stays below or around the melting point.
You could try to boot into something different from usb or dvd and see if it stays responsive in that. (like a freedos usb boot stick)
mahkeymike:
Take the motherboard out of the system and see if the cpu fan is even spinning. If the caps are not bulging it could be your cpu overheating. But its most likely the caps.
Rcadefan:
This machine NEVER over heated while I owned it. It always booted up with no issues.
Is there a simple way to detect if it's the HD to blame?
mahkeymike:
--- Quote from: Rcadefan on November 27, 2015, 01:07:29 pm ---This machine NEVER over heated while I owned it. It always booted up with no issues.
Is there a simple way to detect if it's the HD to blame?
--- End quote ---
Yeah, I told him to disconnect the HD and see if the motherboard still locks up in the bios. He said it still locks up, hense, its the motherboard, not the HD.
lilshawn:
the computer is being random (as it seems) but freezing in the bios means board issue, CPU, RAM, or power supply. you can safely ignore every other component like monitor harddrive io board.
double check the CPU fan is spinning
reseating the RAM....take the stick out...maybe blow out the contacts and reinsert.
next i would try another power supply. it's a plain old ATX connection. just plug in and test it and see if it boots to the bios and works okay. the stock "ITX" power supplies inside the machines are junk and really need to be replaced with something better.
failing those things, you can remove and reinsert the CPU...switch it with another if you have one that will work in there. it's a pretty paltry celeron nothing special. if they've been overheated they can get flaky random things happening. you should be removing the CPU cooler and removing the stupid thermal interface material they come with and replacing it with some good heatsink grease anyway. the stuff it comes with is junk.
barring those items, or replacing them with known good parts, the board is at fault. check the capacitors for any with bulging tops. any of the green capacitors around the CPU should be replaced. they are getting pretty old if they haven't started leaking already.
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