Hello! A few months back you fine folks walked me through getting my upright Megatouch XL to work. Back then it was the chip on the i/o board that has DOS stored on it (the chip rotted somehow). I bought a new motherboard and I/O board on eBay and after getting help making this thing work with CF instead of CD-ROM, all was well.
That lasted a whopping 3 months or so. I went to put the thing on 2 weeks ago and it will not boot. When I power it on, all I hear is repeated sounds from the speaker that sound like the machine is powering on and off at a very fast rate (seriously it's like every half second).
There were a few times (maybe 4 out of 100?) that I got it to boot. Those rare times I either got an error about missing some driver file (this is from FREEDOS installed to the CF) or I will get really, really lucky and I will see the Megatouch splash screen but it lists zero games and all I can do is see the Megatouch advertisement splash screens for other exciting products.
So I bought a brand new Megatouch power supply. I got it in the mail the other day and finally had time to wire it up today and....same thing! So it is not the power supply, somehow.
I also do not think it is the motherboard because I have two of them and they both give me the same results. Though I did have two I/O boards at one point, unfortunately I gave one away so I only have one to test. Though I can't imagine it's the I/O board since this one looks brand new practically.
List of things I have tried: different sticks of RAM, taking out the CMOS battery, different ribbon cable for the CD-ROM/CF, new power supply, different motherboard, different sticks of RAM, and taking out the riser board and plugging the i/o board directly into the motherboard.
If I take out the i/o board I get no booting either. The only difference is I don't hear the sounds from the speaker when it constantly reboots. I have tried taking out the RAM and leaving the i/o board in and the same thing happens so I don't think it can be the RAM.
I am at a loss trying to think about what else I could possibly do. I can't believe what a nightmare/curse this thing has been to me. I don't think I have ever had this amount of trouble with any piece of tech in my life. Any advice on what to try would be greatly appreciated!