oo low I feel. Is there a good connection from T23 to pin 4? It sounds
> as if that line might be disconnect or there is a problem with the contrast
> voltage generation.
>
> Is VR1 giving a good voltage input?
>
>
> *From: *M100 on behalf of "
> chadhendrick...@sbcglobal.net
is a problem with the contrast voltage
> generation.
>
> Is VR1 giving a good voltage input?
>
>
> *From: *M100 on behalf of
> "chadhendrick...@sbcglobal.net"
> *Reply-To: *
> *Date: *Monday, August 19, 2019 at 8:24 PM
> *To: *
> *Subject: *Re: [M10
drick...@sbcglobal.net>>
Reply-To: mailto:m...@bitchin100.com>>
Date: Monday, August 19, 2019 at 9:18 PM
To: mailto:m...@bitchin100.com>>
Subject: Re: [M100] M100 display not working, all else seems good
BINGO!
That was it!
C82 was one of the capacitors that had leaked a
00 display not working, all else seems good
With one lead on Pin 4 and one lead on GND, it is maxing out at about 1.25v and
goes down to around zero. Is this acceptable?
Thanks,Chad
itchin100.com>>
Subject: Re: [M100] M100 display not working, all else seems good
With one lead on Pin 4 and one lead on GND, it is maxing out at about 1.25v and
goes down to around zero. Is this acceptable?
Thanks,
Chad
of
"chadhendrick...@sbcglobal.net"
Reply-To:
Date: Monday, August 19, 2019 at 7:49 PM
To:
Subject: Re: [M100] M100 display not working, all else seems good
I also checked the contrast signal and it is adjusting with the contrast pot.
Date: Monday, August 19, 2019 at 7:49 PM
To: mailto:m...@bitchin100.com>>
Subject: Re: [M100] M100 display not working, all else seems good
I also checked the contrast signal and it is adjusting with the contrast pot.
behalf of
"chadhendrick...@sbcglobal.net<mailto:chadhendrick...@sbcglobal.net>"
mailto:chadhendrick...@sbcglobal.net>>
Reply-To: mailto:m...@bitchin100.com>>
Date: Monday, August 19, 2019 at 7:52 PM
To: mailto:m...@bitchin100.com>>
Subject: Re: [M100] M100 display not
te: Monday, August 19, 2019 at 6:47 PM
To: "m...@bitchin100.com<mailto:m...@bitchin100.com>"
mailto:m...@bitchin100.com>>
Subject: Re: [M100] M100 display not working, all else seems good
I would start checking the signals at the LCD connector.
Ensure the voltages are prese
From: M100 On Behalf Of
chadhendrick...@sbcglobal.net
Sent: Monday, August 19, 2019 8:35 PM
To: m100@lists.bitchin100.com
Subject: [M100] M100 display not working, all else seems good
Hello,
New to the list. Just pulled my Model 100 out of storage where it had been for
at leas
I just checked the +5v and -5v at the display connector on the motherboard and
also at the connector on the display and both are good. I also checked the
contrast signal and it is adjusting with the contrast pot.
So it seems that solid power is at least making it to the LCD... however, there
Of
chadhendrick...@sbcglobal.net
Sent: Monday, August 19, 2019 8:35 PM
To: m100@lists.bitchin100.com
Subject: [M100] M100 display not working, all else seems good
Hello,
New to the list. Just pulled my Model 100 out of storage where it had been for
at least 20 years.
It would not power up
I would start checking the signals at the LCD connector.
Ensure the voltages are present, and that the contrast signal is also there
and adjusting well.
Sometimes if you hold the screen at different angles you can see faint
text. Give that a try.
Seems like you m100 is mostly working...
On
Hello,
New to the list. Just pulled my Model 100 out of storage where it had been for
at least 20 years.
It would not power up so I have replaced many of the electrolytic capacitors
(several of which were obviously leaking) including all the ones near the power
switch (C83, C82, C85, C84, C90,
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