I always see the Sanyo VM-4209 being the sought after monitor to be used with the Apple-1.
The VM-4092 looks very similar, does anyone use this model with their Apple-1? I see the VM-4092 doesn't have a power LED. It looks like it has a 12V DC input which would be handy for non-US users. Does anyone know if there are any other differences?
Can be seen being used here: https://www.youtube.com/watch?v=4l8i_xOBTPg
Well I took a quick look and the original monitor for my 1976 Apple-1 is a vm4092 dated 1976. One of my 1977 Sol-20's from the original owner came with a 4209, dated 1977. So I guess both were used with hobby computers, one might have been cheaper? Maybe in 1977 they added an LED and changed model numbers?
Anyone have a 1976 dated VM4209 not a VM4092?
Cheers,
Corey
Interesting, does yours have 12V DC input? Do you have any manuals for it?
My VM 4209's are dated 1978 and 1979.
[quote=td75]
Interesting, does yours have 12V DC input? Do you have any manuals for it?
[/quote]
Yes it has a 12V DC
It actually says AC 120V 27 watts, DC 12V 12 watts
Date is June 1976
Since my Apple-1 was purchased originally from the byte shop, it'd not first 50, it's an NTI. It has the original byteshop Koa wood case, datanetics keyboard and triad supply, so the monitor was most likely purchased at the same time since I was told what I got was everything the original owner bought from the byteshop.
Does anyone know what the correct DC adapter for this 4 pin connector is?
20190822_103518.jpg
This may help...
Thanks Corey, do you have schematics for this monitor?
I'm still not sure what type of DC connector this is. I was thinking of replacing with a panel mount DC connector instead.
I have the VM4209 service manual in PDF, but it seems mostly accurate for the 4092 with minor differences. PM me your email,
Thanks, PM sent.
PM Sent
Hi folks, does anyone here have photos of the *inside* of a VM 4092 handy?
I found this thread while trying to identify the caseless guts of a Sanyo display I'm working on. It appears to be the insides of one of these monitors, but it isn't quite a match to the insides of a VM4902 (as seen in the service manual here)
The design I'm looking at does not have any neckboard for the CRT-- just a plain socket connection-- and there's no daughterboard PCB at the right of the back (which has focus jumpers etc on the 4902). In other words, it appears to be a simpler (and probably cheaper) circuit overall, but otherwise has the same shape and basic design. My guess is that this is the inside of a VM4092, which was perhaps originally an electrically simpler or just earlier revision of what later became the upgraded 4902, and if nothing else the model number order could support that. But I can't confirm since no internal images or any documentation for that model anywhere I could find on the web.
This thread (which posed an interesting question!) didn't seem to reach a conclusion on differences between these models beyond the power LED. Wondering if it's possible to tie up the answer to that as well as help me clarify what device I'm looking at.
Thanks for any thoughts/assist!
A lot of the 12V monitors like this were intended for things like TV station vans and other applications where they'd be used on vehicle power or a battery instead of from wall current. But of course things got sold for other than thier original purpose all the time. None of those Sanyo monitors were really intended to be used on computers at all to begin with... since home computers with video out was basically a very new thing. They were mostly sold for monitoring video production or security/surveillance video.