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Re: H5 A3 FIXES
Posted: 06 Oct 2020 10:16
by exxos
dragmar wrote: 06 Oct 2020 08:34
@exxos As soon as PCB H5 you have. Did you fix any mistakes before shipping? will everyone have to do it themselves?
I've not even got the boards yet.. And yes people will have to do the fixes themselves.
Re: H5 A3 FIXES
Posted: 22 Oct 2020 13:15
by Icky
Started to look at the patches and the board. I think I will probably do the patch wires underneath where possible then I don't have to look at them :)
Will probably start tonight and will upload alternative pics if I manage to patch another way to @exxos' original patches.
Re: H5 A3 FIXES
Posted: 24 Oct 2020 20:53
by Icky
Helpful Hint #1
Not quite a fix but more of a hint. The S2 MIDI header on the H5 has a header close to it that can be used to take the L/R audio out from the MIDI card. However don't put a vertical header in as the S2 card is in the way. Instead put in a 90 degree header.
IMG_5840.jpeg
IMG_5842.jpeg
Re: H5 A3 FIXES
Posted: 27 Oct 2020 14:21
by exxos
Check #1 - MAKE SURE YOUR IC11 ISN'T UPSIDE DOWN
On my board, and I assume everyone else's is also, please check that the dot on the chip is on the top left, not on the bottom right as in this image because this is upside down. :roll:
do not power up as the IC will get red-hot and kill it...
IC11.jpg
Re: H5 A3 FIXES
Posted: 27 Oct 2020 15:50
by Icky
exxos wrote: 27 Oct 2020 14:21
IC11 UPSIDE DOWN
On my board, and I assume everyone else's is also, please check that the dot on the chip is on the top left, not on the bottom right as in this image because this is upside down. :roll:
do not power up as the IC will get red-hot and kill it...
Just checked my board and its the right way round.
Re: H5 A3 FIXES
Posted: 27 Oct 2020 16:37
by exxos
Icky wrote: 27 Oct 2020 15:50
Just checked my board and its the right way round.
odd. wonder how many.. though they said some of the boards were scratched and had to be redone, so maybe just half the boards have the issue :shrug:
Re: H5 A3 FIXES
Posted: 27 Oct 2020 22:00
by exxos
Fix #4 - SMT MFP FIX
D3,D4 need to be swapped on the MFP...
IMG_5719.JPG
IMG_5720.JPG
Re: H5 A3 FIXES
Posted: 27 Oct 2020 23:10
by exxos
Fix #5 - YM AUDIO BIAS FIX (NO AUDIO)
Remove C60 and blob over C60 pads.
IMG_5722.JPG
Re: H5 A3 FIXES
Posted: 28 Oct 2020 09:39
by terriblefire
You could avoid all this pain by sticking to top and bottom for data signals. I mean its not like the board is tight for space :P
Re: H5 A3 FIXES
Posted: 28 Oct 2020 09:44
by exxos
terriblefire wrote: 28 Oct 2020 09:39
You could avoid all this pain by sticking to top and bottom for data signals. I mean its not like the board is tight for space :P
No way possible unfortunately. Was really pushed to fit in 3 layers.