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Paul's H5C5B Build
Posted: 17 Mar 2025 20:51
by plee1024
Received the board today.
20250317_154158[1].jpg
20250317_154048[1].jpg
Re: Paul's H5C5B Build
Posted: 18 Mar 2025 14:24
by plee1024
Completed the chip smoke "reverse"
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Installed jumpers, video connector, reset and chip installs
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After switching the jumper to GLUE ROM decoding
20250317_204330[1].jpg
Plan to add a few more connections (cart/ASIC) and an IC socket.
Reset switch needs to be redone, just not on there as I think it should.
Overall, so far the chip flip was probably the hardest part for me, not an
expert at de-soldering small chips like that.
Re: Paul's H5C5B Build
Posted: 18 Mar 2025 14:29
by exxos
:bravo: :2k2:
Re: Paul's H5C5B Build
Posted: 19 Mar 2025 12:08
by plee1024
Added the cartridge connector and something happened and it started to act strange. It would only boot one time
and on the second time it would be a white screen. I would have to wait a few minutes and unplug the power and
video then try again and it would boot but again only the one time. I used the diagnostic cartridge and it did appear.
So I took off the connector and now nothing but a white screen. Tried replacing different chips to see if that was
issue and unfortunately put in the DMA chip backwards and now that's toast (do have an extra one). Still have the
white screen not sure what to do at this point. :(
Re: Paul's H5C5B Build
Posted: 19 Mar 2025 14:05
by exxos
According to your image, your missing the flashy clock jumper link...
viewtopic.php?p=125028#p125028
Re: Paul's H5C5B Build
Posted: 19 Mar 2025 21:04
by plee1024
Added the flashy clock link, still just a white screen. Took off the reset button, don't think that
would be a problem right now...
20250319_155800[1].jpg
Re: Paul's H5C5B Build
Posted: 19 Mar 2025 21:11
by exxos
I suggest you work through the troubleshooting steps
viewtopic.php?p=29460#p29460