Steve's H5 A3.14 Build (Chicken Pie edition)

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Steve
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Re: Steve's H5 A3.14 Build (Chicken Pie edition)

Post by Steve »

Just wanna say thank you to @PhilC for getting my H5 working. Combination of a bad MFP and a botched patch :)
PXL_20201225_104850860.jpg
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Still got a little bit of troubleshooting to do in regards to the whites being a shade of yellow. Notice how it kind of 'smears' with different strengths of yellow. This makes me think it's something on the very end of the video output circuit causing it. Does anyone have any suggestions, I was thinking of desoldering/resoldering the DAC. But it's probably not the DAC.
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DoG
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Re: Steve's H5 A3.14 Build (Chicken Pie edition)

Post by DoG »

It seems that you got a missing or stuck bit on blue. Check Shifter (pin 21, 22, 23) or the multiplexer for blue (74AC157) then the DAC.
Steve
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Re: Steve's H5 A3.14 Build (Chicken Pie edition)

Post by Steve »

@DoG
Thx for pointing me in the right directions, cheers & merry xmas :D
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PhilC
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Re: Steve's H5 A3.14 Build (Chicken Pie edition)

Post by PhilC »

@Steve had to leave some.of the fun for you to sort out. Won't take you long.
If it ain't broke, test it to Destruction.
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Re: Steve's H5 A3.14 Build (Chicken Pie edition)

Post by Steve »

I had some time to try and fix my Gipsy Kiss colored screen today :lol:

* Every pin and trace on the multiplexers seems fine
* Re-soldered, re-socketed & ultrasonically cleaned the shifter
* Checked all shifter pins
* De-soldered & resoldered the DAC

~ Still got Gipsy Kiss yellow screen :?

Not sure what to do now to be honest. It's not my vga socket as it was the same at Phils.

I guess the shifter could be faulty? I'm wondering if anyone could lend me a spare shifter for testing, I'd cover the post.
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PhilC
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Re: Steve's H5 A3.14 Build (Chicken Pie edition)

Post by PhilC »

@Steve Try wiggling the monitor socket, I found it very loose on my adaptor, might be you need a new socket?
If it ain't broke, test it to Destruction.
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Re: Steve's H5 A3.14 Build (Chicken Pie edition)

Post by exxos »

Just get the diagnostic cartridge on colour test, and check all the bits are switching on the shifter outputs For starters...
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
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PhilC
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Re: Steve's H5 A3.14 Build (Chicken Pie edition)

Post by PhilC »

exxos wrote: Fri Jan 01, 2021 3:26 pm Just get the diagnostic cartridge on colour test, and check all the bits are switching on the shifter outputs For starters...
Seemed ok here with that when I tested it.
If it ain't broke, test it to Destruction.
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exxos
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Re: Steve's H5 A3.14 Build (Chicken Pie edition)

Post by exxos »

PhilC wrote: Fri Jan 01, 2021 3:28 pm Seemed ok here with that when I tested it.
Tested the other side of the buffers as well ?
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
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PhilC
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Re: Steve's H5 A3.14 Build (Chicken Pie edition)

Post by PhilC »

@exxos , no I hadn't, I was more interested in getting it to work.
If it ain't broke, test it to Destruction.
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