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Re: IngoQs attempt at messing up the H4
Posted: 03 Jan 2020 14:13
by PaulJ
IngoQ wrote: 03 Jan 2020 13:27
My back is getting better, so I here is some progress:
All sockets in place, only some of the resistors are missing, and then on to the fixes. I'm positive I get it finished this year :mrgreen:
I believe your battery holder is in backwards. Also don't forget r908 as I did.. gives you 20 bombs.
Re: IngoQs attempt at messing up the H4
Posted: 04 Jan 2020 12:21
by IngoQ
PaulJ wrote: 03 Jan 2020 14:13
I believe your battery holder is in backwards.
Thanks, corrected.
PaulJ wrote: 03 Jan 2020 14:13
Also don't forget r908 as I did
Already fitted, thanks again :)
All parts are now soldered in and on, at least my list has everything striked off. Will now clean the rear (easier, when there are no bodge wires) and then apply the missing patches.
20200104_131106.jpg
Re: IngoQs attempt at messing up the H4
Posted: 04 Jan 2020 14:07
by exxos
Thee are 2 bodge wires ;) plus a bodge resistor :)
Re: IngoQs attempt at messing up the H4
Posted: 04 Jan 2020 18:11
by IngoQ
exxos wrote: 04 Jan 2020 14:07
Thee are 2 bodge wires ;) plus a bodge resistor :)
I counted 3 :-P DTACK, SIMM and MAX238 ;)
And here they are:
20200104_153531.jpg
20200104_153520.jpg
20200104_153509.jpg
20200104_153454.jpg
And in addition: The DMA workaround:
20200104_153425.jpg
RGB next, lastly the ICs and then the moment of truth... but playtime for today is over :)
Re: IngoQs attempt at messing up the H4
Posted: 04 Jan 2020 18:42
by DoG
One wire to many on the buffer bypass for HDD. You need to remove the leftmost wire.
Re: IngoQs attempt at messing up the H4
Posted: 05 Jan 2020 16:12
by IngoQ
Yep, thanks, already found that one.
Re: IngoQs attempt at messing up the H4
Posted: 05 Jan 2020 18:05
by IngoQ
Okay, I believe I am done:
20200105_190115.jpg
Sadly no time anymore for a test run, will have to wait a bit... And I have to admit, I am a little scared ;)
Re: IngoQs attempt at messing up the H4
Posted: 05 Jan 2020 20:13
by PaulJ
IngoQ wrote: 05 Jan 2020 18:05
Sadly no time anymore for a test run, will have to wait a bit... And I have to admit, I am a little scared ;)
Looking good. :thumbup: When ya get time let us know how power went. :bravo:
Re: IngoQs attempt at messing up the H4
Posted: 11 Jan 2020 11:12
by IngoQ
DSC_0027.JPG
It's alive :mrgreen:
Haven't fully tested it because of a lack of working floppy drives, but at least got it to run GB6. Seems quite stable to me, and no complains about the video quality either.
The DAC is getting quite hot, is that normal?
Re: IngoQs attempt at messing up the H4
Posted: 11 Jan 2020 11:23
by Icky
IngoQ wrote: 11 Jan 2020 11:12
It's alive :mrgreen:
Haven't fully tested it because of a lack of working floppy drives, but at least got it to run GB6. Seems quite stable to me, and no complains about the video quality either.
The DAC is getting quite hot, is that normal?
Great work
@IngoQ, another H4 is born.
Yes the DAC does get hot.