Re: Toshiba T5200 mods and upgrades
Posted on 2020-01-05, 23:08
What's the address shown? Is it consistent?
Re: Welcome to the updated VOGONS
Posted on 2020-01-04, 22:12
I never noticed it until someone mentioned it. I use the classic windows cursor, and the one on Vogons is just *slightly* off.
Re: Welcome to the updated VOGONS
Posted on 2019-12-28, 07:35
Looks like this site followed suit of many others moving to the "modern web." Resolution-based responsive design I hate it. Sometimes I do indeed want to use desktop view on mobile devices so I can see large amounts of content for easy comparison and analysis. Or not having to poke around at times …
Re: Toshiba T5200 mods and upgrades
Posted on 2019-12-20, 23:45
Without seeing the machine, it's hard to say. Dry joints are a bit on the lower chance. These units used leaded solder and through-holes, with a few plcc and qfp chips. That said, not impossible, but not very likely. Also, one that I've found examining the panels is that the ribbons that connect to …
Re: Toshiba T5200 mods and upgrades
Posted on 2019-12-13, 05:40
Apologies for not getting the images out sooner. Had things get in the way. Anyways, here are examples of images. Don't care the format, so long as you don't have JPEG compression that limits the clarity of a zoomed in image. ~70 quality in photoshop save for web, and 8+ in save as jpeg. For the …
Re: Toshiba T5200 mods and upgrades
Posted on 2019-12-10, 20:54
Thanks for the suggestion, however: The maintenance manual is incorrect. Notably it labels pins 33 and 34 on machine side connector as ground, when they are actually +5v supply lines. Verified with probing and testing. But I already have figured out the addressing scheme, I just needed pictures of …
Re: Toshiba T5200 mods and upgrades
Posted on 2019-12-08, 22:08
Pretty much the only other thing on these PSUs that have a considerable chance of failure than the caps are the regulating mosfets. That and the traces if well, you mess up. The full switching PSUs on machines other than the T3100SX are fairly resilient if you keep them maintained. Much easier to …
Re: Toshiba T5200 mods and upgrades
Posted on 2019-12-06, 20:24
The hex inverters are there for the memory addressing as you said. Want my input? My first guess would be the one that stands out from the rest. All others have code 8452j06 while that one has 8452j00. What I would recommend is each one you desolder, resolder a socket so you don't have to solder to …
Re: Toshiba T5200 mods and upgrades
Posted on 2019-12-06, 01:56
my03 Yes, likely a memory chip has gone. Yes and no expected on old machines. Luckily, everything else works fine so chances you didn't fry something are high. I am still higly recommending you look into that PSU. Whether ram went out or a PSU is about to go, you'll need to dismantle the unit to …
Re: Toshiba T5200 mods and upgrades
Posted on 2019-12-05, 10:50
On another forum, I found a post by someone who pulled something similar with a T3100SX which uses a similar 26-pin interface. http://www.vcfed.org/forum/showthread.php?56199-Non-standard-Citizen-26-pin-floppy-drives It appears a similar process with old synthesiszers. This should provide some …
Re: Toshiba T5200 mods and upgrades
Posted on 2019-12-01, 05:14
Pretty much any number of unknown things as you said. Oxidation could've caused a bad solder joint, bad caps... Ones especially in units not stored right need a good head cleaning and a stepper motor fixup and lubrication. But sometimes the voltages going into it are a little off like from a failing …
Looking for Frederick Feline-LT Driver
Posted on 2019-09-24, 08:09
Looking for the drivers for a Frederick Engineering Feline-LT card. It's a protocol analyzer that uses a Zilog Z85C30 series chip and plugs into the T3100SX expansion bay. _DSC0355r.png IMG_1804r.png I'd never really thought much of it in the past. But time has passed this seems an interesting piece …
Re: What retro hardware you killed today or in the past :(. Killing spree stories+serial killers are welcome.Rest in pieces.
Posted on 2019-09-24, 07:50
Not exactly vintage, but retro. Got an old m-itx pentium m board. It ran, then smoke started billowing out from the cpu cooler and the chipset and it died. Ram and psu survived, nothing else. Investigation turned up that some caps went south and ruined the fets. And the rest is history. I'm thinking …
Re: Toshiba T5200 mods and upgrades
Posted on 2019-09-24, 04:12
Can you guys explain better how do you changed the screen to a newer lcd ??? the wire conections, etc.. really aprricieted The T5200 uses a 4 bit ttl connection to transmit pixel data synchronized with horizontal and vertical clock pulled from a vga signal. Unless you can figure out the data being …
Re: How to hide the "Program Manager" icon on the Windows 3.1 desktop?
Posted on 2019-09-23, 07:14
You can set the shell parameter to point to the game exe.
Re: Toshiba T3100SX - 2mb Ram Modules
Posted on 2019-09-22, 22:30
In a lot of cases, yeah that will do. But other times the things spilled inside while the unit was in storage unnoticed and left like that to rot. Then add the amount of nicd batteries concentrated in one area. IMG_1825.JPG corrodedports.png Photos of a T3100sx a friend purchased against my warnings …
Re: Toshiba T3100SX - 2mb Ram Modules
Posted on 2019-09-22, 17:44
dersammler, I'd steer clear of a t3100sx unless it's shown functional. The internal power board is full of big, juicy caps and most of them spilled years ago and wrecked havoc. That is if the resume battery (5 aaa nicd cells) or main batteries haven't leaked already. Usually these old machines …
Re: Toshiba T3100SX - 2mb Ram Modules
Posted on 2019-09-22, 02:38
Interesting. Either they aren't that hard to find and a lot of machines have ram cards or nobody cares enough about the machines to shell out money folks are offering them. I do remember them popping up frequently on ebay DE but never on ebay US, so I guess it's a regional thing. If you're willing …
Re: Toshiba T3100SX - 2mb Ram Modules
Posted on 2019-09-18, 20:15
Ones for the t3100sx are some oddball proprietary modules. Most machines posted about don't have more than the stock 1mb. If you have any specifically for the SX, I'd like to get in touch with you.
Toshiba T3100SX - 2mb Ram Modules
Posted on 2019-09-18, 07:08
I've been reading through these boards and others, and well I think I might as well share to help benefit the T3100SX community. Some folks out there have been wanting a few pics of the proprietary ram card. Well, the fact is, there is not one single design. I have four different versions of the ram …
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