Included tags: trs-80 ×
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TRS-80 PC-2 (Sharp PC-1500) regulator teardown

VCFed about 1 day ago

Got a PC2 for parts to fix another unit's trashed buttons and took the opportunity to tear down the potted regulator module so I could replicate it should I ever kill one, or get a PC2 with a dead regulator. Good news is that the Iq is pretty high so that …

Modern update of the CE-158 for the TRS-80 PC-2

VCFed about 3 days ago

I Found what I hope is a source for a CE-158 serial interface so that I can get one to wring out the operational details in person. Been looking for one on Ebay etc but they are very rare, however a company in Germany has new ones available; at least it a …
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Radio Shack TRS-80 Modem II (26-1173)

VCFed about 7 days ago

I have a Radio Shack TRS-80 Modem II (26-1173) up for offers. …

Help using FluxEngine to read 5.25" created with trs80-III circa 1983.

VCFed about 8 days ago

I have an original 1983 Radio Shack trs-80 single sided 5.25" floppy with some old basic progams on it. I have a greaseweazle that's able to read via a 5.25 drive and I have softare called "FluxEngine" installed which was recommended by gr …

Sharp PC-1211 tape loading problems (TRS-80 PC-1)

VCFed about 10 days ago

Hi, I just finished refurbishing a Printer/Cassette interface CE-122 for the Sharp PC-1211. I am still waiting for my replacement LCD to arrive for the computer itself, but the old LCD is still partly usable. The PCB of the CE-122 interface had some corr …

TRS-80 Model 1 won't boot from disk

VCFed about 11 days ago

I have a Japanese TRS-80 model 1 that I can't seem to boot from a floppy disk. I'm creating the floppy disks using a cassette input and Büssert's Bootstrap program. The creation of the disks seems to go through without errors. I've tried to write three …

WTB TRS-80 Model 12 or Tandy 2000 keyboard

VCFed about 14 days ago

I have a Model 12 that’s coming to me without a keyboard, and that won’t do. Doesn’t need to be collector condition or even fully functional, just physically complete. …

Building a Clone MITS 8800

VCFed about 14 days ago

I'm starting to think about diving down the rabbit hole of building an 8800 clone. It goes back to the first computer I was exposed to back in the 70s, which I'm fairly sure was an 8800. I learned to program in 1979 on the TRS-80 Model 1, and I have severa …

Display/CRT on TRS-80 Model 3 - too bright

VCFed about 18 days ago

Per my original post on 9/29/2023, I purchased a TRS-80 Model 3 that had a lot of mouse damage. I've fixed the visible issues on the video board (disconnected wire, chewed insulation). Now the issue is, the display is too bright. I see there was a simil …
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New Releases • Free Release - Tristam Island by Hugo Labrannded just Updated Minimum Price to $0.00

Lemon64 about 18 days ago

https://hlabrande.itch.io/... Author:After crashing your plane at sea, you end up drifting to a small island, with not much to survive. You explore, and find out the island was inhabited, years ago. But why did the people leave? And why is th …
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TRS80-4P memory problem

VCFed about 20 days ago

Hi all, first post Been a lurker for a while. I have my family TRS-80 Model 4P, which until recently, has been working pretty well. Upgraded the PSU with Jay Newirth's awesome replacement PSU, added a hi-res card from Ian Mavric (along with a FreHD), an …
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Video via EasyCAP to USB

VCFed about 21 days ago

I recently purchased an EasyCAP to use my TRS-80 Model 1 on a notebook or tablet. Unfortunately without success so far. Has anyone gotten this to work? …

A few items for sale

VCFed about 22 days ago

$90. Apple Macintosh SE $200 IBM PC 5150 rev A $200 IBM PC 5155 Portable 640 KB, Two 5.25 drives, XT-IDE, Denim carrying bag $200 IBM PC 5155 Portable . Original box, 640 KB, Two 5.25 full-height drives $150 Commodore 64 $150 with EasyFlash and Disk Drive …

How to get video out of a TRS-80 2000 PC

VCFed about 24 days ago

Hello all! The Wisconsin Computer Club and I are hosting a "Tandy" themed event on November 25th, and I've finally pulled the TRS-80 2000 out of deep storage for the lineup. Unfortunately, I do not have a monitor for it, which rather dampens any …

Help: CM-1 Monitor for TRS-80 Model 1 no longer displaying Model 1 Output Correctly!

VCFed about 27 days ago

Important troubleshooting Information: 1) It is not smoking or popping the fuse, 2) Upon turning off, a very bright small dot appears in the center of the screen for 1 second. And most important for why I believe it is an issue with the monitor: 3) If I tu …

TRS-80 model 2

VCFed about 1 month ago

Picked up a TRS-80 II system with eight-inch drive, printer and lots of documentation and software. Going to assume that this was a larger version of the TRS-80 system that was maybe intended for business? Or something back in the days before DOS ruled the …

Radio Shack TRS-80 II System, printer and software

VCFed about 1 month ago

Ok, this is a weird one but just picked up a bunch of Radio Shack TRS-80 model two stuff, it’s the computer with the eight-inch floppy drive, keyboard, dot matrix printer, dust covers and two big boxes of manuals and program binders. No idea of working c …

TRS-80 PC-2 8K RAM expansion

VCFed about 1 month ago

I have collected several PC2s that have all been repaired but I only have my one original 8K RAM module. I was bidding on a module on EBay but got sniped at the last minute so I decided to just make my own. This board replicates the original which has 4 …
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Small daughter board Model 1 Level II

VCFed about 1 month ago

On some TRS-80 Model 1 Level II boards there is a small daughter board mounted as shown in the photo. Can anyone tell me if that was originally installed (from the factory)? And what is the function of the board? …

Burnt trace on PSU for TRS-80 Model 3

VCFed about 1 month ago

I purchased a TRS-80 Model 3 with multiple issues as stated in my original post. This issue is for a burnt trace on the PSU that was powering the main board. I'm currently using the PSU that powered the two internal disk drives as my main board PSU--I as …

TRS-80 model 4 in need of a floppy drive and CRT TLC

VCFed about 1 month ago

Along with an MTI MOD3 PLUS computer that I purchased yesterday, I got a TRS-80 model 4. It has 2 issues: Firstly, it has no floppy disk drives (the drive bays are empty, and the floppy cable is visible inside). And secondly, the CRT is amongst other thing …

I purchased an MTI MOD3 PLUS 48K --- Who has one?

VCFed about 1 month ago

Yesterday (Nov 3rd), I purchased what I thought was a TRS-80 Model 3, but it turns out it's an MTI MOD3 PLUS 48K with dual disk drives. It definitely needs restoration, as the CRT mounts are broken and is hanging on for dear life. Most likely caused by shi …

TRS-80 15 MEG 26-4156 repair

VCFed about 1 month ago

So In a recent pickup I got a TRS-80 15 meg hard drive with ribbon cables. IT was disgusting inside and out.. like a black soot or industrial grime. Seller said he didnt know anything about it or what it goes to but the unit has no power. First thing I did …

TRS-80 Model 100 troubleshooting

VCFed about 1 month ago

Greetings Everyone! Recently picked up a rather scuffed tandy 100 and going through the process of getting it working again. Pretty sure someone use the incorrect DC adapter on this as all the power rails were shot. The varistor by the DC jack input blew …

Need help and info on this PC-2 Pocket PC peripheral

VCFed about 1 month ago

So I picked up this TRS-80 Pocket Computer Printer and cassette Interface as is. It came with no ac adapter, just a scrap of paper and .. No pens perhaps? The unit calls for a 6v DC power supply and I found one that fits and is 7.5V 400ma center positive. …