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Hmm service manual definitely says 100uF CAPE R010025 100uf 25v Radial Cap 1 C53 Yeah I've tried searching images but none show the rating :( Anyway after pulling the board out I found this under the heatsink which I don't think is factory Edit: Also tried replacing the 74LS374N with a 74HC374N I ha...

Whilst waiting for the caps to arrive I connected the floating ground and put in a ground strap. Still no audio. Will be interesting to see if the caps help.

Also with the missing c53 on the list it shows as being a 100uF but Martin you mention a 470uF?

Thanks Dave, No sound with CTRL + G. I notice that if I tap or nudge the video board the display changes to Grey. I will check the solder contacts and replace the caps on the motherboard at least as the Axial cap which goes over the regulators looks incorrect (2200uF 63v) and isn't wired up the best...

Sorry I meant I had removed the CF adapter not just the card itself :lol: Edit: I have tested with the Magrom fitted internally and it works however I have found I do not get any sound with it mounted internally or externally? CFXII is still not working. I think maybe its a power issue? Caps? Are th...

I tried with the CF card removed and have verified the Rom.

I'll open it up again tomorrow and clean the edge connector and reseat the chips.

Thanks

Hi Got the MTX out today and found that I get No Signal (according to the monitor) through the VGA and black screen on the Composite output. Tested the Monitor and VGA cables with a known working source OK Unplugged the CFX and get the Ready prompt and cursor through the Composite output. Anyone hav...

Hopefully I'll have a CFX-II soon thanks to Dave.

I am interested in at least getting it back up to 64k. Most of my machines get some form of cf or sd card.

Hi, I am new to the memotech MTX having wanted one since I was a kid just because it looks cool :D Last August I got a non working MTX512 and it wasn't until this week that I managed to get a power supply (funnily enough labelled MTX500 for reasons below). I only had to replace a cracked ceramic cap...