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Desperado's latest activity
Desperado
replied to the thread
Cbm 2001 Pet strange boot
.
I am desperate!!!
Today at 9:10 PM
Desperado
replied to the thread
Cbm 2001 Pet strange boot
.
Yes Dave, CHOP button is pusched IN!
Today at 8:39 PM
Desperado
replied to the thread
Cbm 2001 Pet strange boot
.
A10/3 3,94V A10/4 5,1V A3/12 0,5V A3/13 5,1V A3/8 4,1V A3/9. 0,5V
Today at 7:18 PM
Desperado
replied to the thread
Cbm 2001 Pet strange boot
.
seems ok A3/13 OK A3/12 0,2 V ??? A3/9 0,2V ?? A3/8: strange signal...i can see double horizontal lines in the top:
Today at 5:08 PM
Desperado
replied to the thread
Cbm 2001 Pet strange boot
.
Today at 5:00 PM
Desperado
reacted to
daver2's post
in the thread
Cbm 2001 Pet strange boot
with
Like
.
Those traces look fine to me. It is not too easy to view the videos however (from my perspective). If I freeze the video, I only get...
Today at 12:34 PM
Desperado
replied to the thread
Cbm 2001 Pet strange boot
.
https://www.youtube.com/watch?v=3Q9KxQXQoOg https://www.youtube.com/watch?v=i5Z0Hl5tbIw
Yesterday at 7:45 PM
Desperado
reacted to
daver2's post
in the thread
Cbm 2001 Pet strange boot
with
Like
.
>>> I can see this on UB2 pin 6. I am glad you can. This is correct! If you look at the name of the signal on the schematic it is...
Yesterday at 7:33 PM
Desperado
replied to the thread
Cbm 2001 Pet strange boot
.
I can see this on UB2 pin 6 :(
Yesterday at 7:21 PM
Desperado
reacted to
daver2's post
in the thread
Cbm 2001 Pet strange boot
with
Love
.
>>> Maybe bad ls244??? Or maybe a bad CPU!!! Will you please stop just throwing random ICs out that you think could be faulty. This...
Yesterday at 7:06 PM
Desperado
replied to the thread
Cbm 2001 Pet strange boot
.
I am desperate!!! This is the best setting to see a stable waveforms :((( This scope is a sh.. !!! Maybe bad ls244???
Yesterday at 5:50 PM
Desperado
replied to the thread
Cbm 2001 Pet strange boot
.
Ok now i have CH2 (connected with BA15) in botton half screen and CH1 in the middle....correct?
Yesterday at 4:43 PM
Desperado
reacted to
Nivag Swerdna's post
in the thread
Cbm 2001 Pet strange boot
with
Like
.
Lots of knobs to twiddle... DC coupled should work... these signals have a common ground. Select DUAL... use position to put CH1 in...
Yesterday at 11:38 AM
Desperado
reacted to
daver2's post
in the thread
Cbm 2001 Pet strange boot
with
Like
.
You also need to select CHOP - otherwise the two traces will not be synchronised with each other. Dave
Yesterday at 11:38 AM
Desperado
reacted to
dave_m's post
in the thread
Cbm 2001 Pet strange boot
with
Love
.
Nivag, That will be too late. Desperado will have the PET fixed by then! :)
Sunday at 10:05 PM
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