whizzi
Experienced Member
A while ago I found in somebody's garagebox a Tandy TRS-80 Model 4. It had mold on the screen and was there for probably 10 years, buried under several boxes. I took it home and let it sit for a month in my room.
Out of curiosity and knowing the filter would break in worst case scenario, I decided to turn the machine on. It didn't start to smoke immediately and actually gave something on the screen. When I decided to get the camera closer to the computer, the capacitor went pffffft and the room started to smell ugly.
The video:
When I opened the machine, I noticed a lot of changes on the mainboard. Not sure who did it, it's been repaired by a Tandy repair shop and this is serial nr 000018 (the newest chip inside has datecode early 1983).
But I'm kinda thinking, is the weird screen a result of the capacitor being end of life or do I have another problem besides the now broken capacitor?
A picture of the mainboard:
Power supply with the main filter broken:
The bottom:
And the interesting sticker stating Tandy repaired it:
Does anyone ever see these modifications or are these modifications made by Tandy because it's probably a very early Model 4 board? The new capacitors are on it's way BTW
Out of curiosity and knowing the filter would break in worst case scenario, I decided to turn the machine on. It didn't start to smoke immediately and actually gave something on the screen. When I decided to get the camera closer to the computer, the capacitor went pffffft and the room started to smell ugly.
The video:
When I opened the machine, I noticed a lot of changes on the mainboard. Not sure who did it, it's been repaired by a Tandy repair shop and this is serial nr 000018 (the newest chip inside has datecode early 1983).
But I'm kinda thinking, is the weird screen a result of the capacitor being end of life or do I have another problem besides the now broken capacitor?
A picture of the mainboard:
Power supply with the main filter broken:
The bottom:
And the interesting sticker stating Tandy repaired it:
Does anyone ever see these modifications or are these modifications made by Tandy because it's probably a very early Model 4 board? The new capacitors are on it's way BTW