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1. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 17-Feb-2024 07:14:21 JST Foone🏳️‍⚧️

   Yep, that CRT has lost vertical deflection.

   Just my luck, I bought a 1 dimensional monitor.

   • Aral Balkan (aral@mastodon.ar.al)'s status on Saturday, 17-Feb-2024 07:25:24 JST Aral Balkan

     in reply to

     @foone Flatland approves.

   • Piggo :verified_horse: (piggo@piggo.space)'s status on Saturday, 17-Feb-2024 07:29:03 JST Piggo :verified_horse:

     in reply to
     @foone yeah but looks like you got some very nice DOS(?) burn-in tho
   • Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 17-Feb-2024 07:29:40 JST Foone🏳️‍⚧️

     in reply to

     • Sos Sosowski

     @sos yeah, I only had it on for a moment. There seems to be action on the screen, so it's generating some signal properly. I'm gonna open it up and see if I can maybe fix it, I've got the service manual.

   • Sos Sosowski (sos@mastodon.gamedev.place)'s status on Saturday, 17-Feb-2024 07:29:41 JST Sos Sosowski

     in reply to

     @foone Dead coil? Also, p sure you know it but this will burn through the tube really fast!

   • Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 17-Feb-2024 07:36:13 JST Foone🏳️‍⚧️

     in reply to

     Arg. I thought I had the service manual for this, but it turns out I don't.

     This is a Wyse-30+ terminal. I have the service manual for the Wyse-30. That plus makes all the difference

   • Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 17-Feb-2024 07:38:19 JST Foone🏳️‍⚧️

     in reply to

     The Wyse-30 was released in 1985, and the Wyse-30 is from 1991. It's the same basic form factor, but they modernized it in several ways. Which ways? I DON'T KNOW, I DON'T HAVE THE MANUAL

   • Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 17-Feb-2024 07:54:23 JST Foone🏳️‍⚧️

     in reply to

     Pulled the motherboard.

   • Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 17-Feb-2024 07:58:17 JST Foone🏳️‍⚧️

     in reply to

     This M76V020 by Oki-Japan/Wyse seems to be a custom part. Maybe they simplified the Wyse-30 by combining a bunch of chips into one ASIC?

   • Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 17-Feb-2024 08:03:58 JST Foone🏳️‍⚧️

     in reply to

     Toshiba TC5565APL-12: 8 kilobytes of SRAM

     UMC UM6116-2: 2 kilobytes of SRAM

   • Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 17-Feb-2024 08:09:17 JST Foone🏳️‍⚧️

     in reply to

     Here's the EPROM: It's a ST M27128AFI: 16 kilobytes of storage

   • Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 17-Feb-2024 08:11:37 JST Foone🏳️‍⚧️

     in reply to

     And the smarts, an Intel 8031AH: That's our good friend the 8051.
     The 8031 has no internal ROM/EPROM, and 128 bytes of RAM.

   • Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 17-Feb-2024 08:15:34 JST Foone🏳️‍⚧️

     in reply to

     No obviously blown caps or anything.
     I've got a matching-ish tube from a Wyse-60 here, maybe I'll try using this board and that tube. That'll tell me if the problem is in the board or the yoke/tube

   • Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 17-Feb-2024 08:23:23 JST Foone🏳️‍⚧️

     in reply to

     well I tried it, and the monitor didn't turn on.
     but my (LCD) monitors for my main PC turned off.

     and then USB my mouse stopped working.,

     I think I may have just done a minor EMP on myself

   • Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 17-Feb-2024 08:33:23 JST Foone🏳️‍⚧️

     in reply to

     • :biromantic_asexualflag::demiboy_flag::pentacon:

     @instereo256 even dumb terminals have a little smarts.
     This one isn't completely dumb, it just has some processing to let it do some local setup and ANSI rendering stuff

   • :biromantic_asexualflag::demiboy_flag::pentacon: (instereo256@realworldsunny.name)'s status on Saturday, 17-Feb-2024 08:33:24 JST :biromantic_asexualflag::demiboy_flag::pentacon:

     in reply to

     @foone@digipres.club the smarts? so it's not a dumb terminal?

   • Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 17-Feb-2024 09:54:50 JST Foone🏳️‍⚧️

     in reply to

     I managed to get it to power on without as much EMP! (my mouse still went out, but that's a Known Problem)
     And I got a Thin Green Line on the other tube.

     So it's definitely not a tube or yoke problem: it's on the motherboard

   • Adam R. Wood (zotmeister@mastodon.online)'s status on Saturday, 17-Feb-2024 10:03:41 JST Adam R. Wood

     in reply to

     @foone I wonder what Doom would look like on it.

   • Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 17-Feb-2024 10:03:41 JST Foone🏳️‍⚧️

     in reply to

     • Adam R. Wood

     @Zotmeister very flat. Something like this, I imagine:

   • Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 17-Feb-2024 16:08:24 JST Foone🏳️‍⚧️

     in reply to

     I'm not entirely sure if this service manual is applicable, given that it says the machine should have a completely different CPU... but it certainly looks possible, so... here's all the components to look at

   • cliffordheath (cliffordheath@mastodon.social)'s status on Saturday, 17-Feb-2024 19:48:59 JST cliffordheath

     in reply to

     @foone Ok, I got advice from a professional service tech who used to repair these. The vertical output IC (readily available) is on the small heatsink in the top-left. (Brown wires synchronise vertical with the mains, for reduced flicker).The small electrolytic capacitors nearby are all suspect for high ESR. And they used glue that degraded, became conductive, and corrodes components legs off, so clean it off and replace any legless parts

   • Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 17-Feb-2024 19:48:59 JST Foone🏳️‍⚧️

     in reply to

     • cliffordheath

     @cliffordheath thanks!

   • vxo (vxo@digipres.club)'s status on Monday, 19-Feb-2024 00:41:28 JST vxo

     in reply to

     @foone thank you for reminding me, I need to dig my old Wyse terminal out of storage. Best I can tell it should just work once a bad rectifier diode is replaced. It's got a less intricate PSU than yours

   • Foone🏳️‍⚧️ (foone@digipres.club)'s status on Thursday, 22-Feb-2024 10:42:12 JST Foone🏳️‍⚧️

     in reply to

     • autistic thing 🍂

     @CyberSaloperie Well, that does help me confirm my dump of the firmware was correct (it's compressed or encrypted or something and I don't know why), but the other items don't really help, I need a service manual

   • autistic thing 🍂 (cybersaloperie@woof.tech)'s status on Thursday, 22-Feb-2024 10:42:13 JST autistic thing 🍂

     in reply to

     @foone

     http://bitsavers.org/pdf/wyse/WY-30+/

     hope it will help ^w^