Spectravideo SVI 728 with Glitchy Video Repaired 

I just discovered your awesome channel - it's certainly up there with the best! -> You definitely deserve more subscribers! And finally, you are my favorite Spanish channel (with pleasant English voice ;-)) right now - greetings from Germany!

Great video! Both entertaining and educational. I hope to see more MSX videos from you :)

I have one of those with the same problem. I’ll try your video when I find time. Thanks a lot!!!

The baking soda trick also works wonders for getting tea and coffee stains off of non-porous surfaces like a glazed ceramic mug. I clean my coffee mug this way every couple days, unless I'm not using it (which is rare). The damage on the case looks to me like it was caused by someone wrapping a cable around the case and leaving it that way for a long time, probably years. The plasticizers in the cable insulation leach into the plastic and cause it to essentially melt. Then, as they evaporate, the plastic re-hardens, but any damage to the shape remains.

I first saw one of these in the late 80's, since then I've always wanted one. This proves how reliable they are after all these years, but what awful assembly. Hell of a tech manual though.

Fantastic Video, it has been very useful to solve the same fault in my SVI. Good job!!

I'm a longtime retro-computing enthusiast/follower, and your channel is my favorite now. High quality contents, well explained. It's remarkable that you show an oscilloscope while doing "detective work" and repairs. I particularly like the "exotic" computers and topics you touch, besides the typical C=64/Spectrum. Congrats! Also what I find amazing is that you're Spanish! You've a perfect English, something particularly difficult for us, native Romance languages speakers. Cheers from Argentina!

I just discovered your awesome channel - it's certainly up there with the best! -> You definitely deserve more subscribers! And finally, you are my favorite Spanish channel (with pleasant English voice ;-)) right now - greetings from Germany!

12:04 I am extremely surprised that this uses basically standard Cherry keycaps stems. I am thinking of importing one of the Arabic localized versions of this to spruce up my mechanical keyboard and to be the only keeb enthusiast to have them. I'm Egyptian and I think it will make for a unique keyboard where the standard styles are English and Japanese. Would you know if they would fit a modern cherry keyboard switch? They look extremely similar at this part of the video. Would you have any advice on cleaning them without ruining the text/legends?

As a follow up I found out that Cherry MX switches released in 1983 and this computer was made in 1984. Is it in fact actual cherry?

Great video. For the metal plate try using a bench grinder with a polishing wheel and fine polishing paste.

Nice video! But I definitely wouldn't have resisted to replace those glue blobs with proper connectors. :)

Another excellent video... I don't want to think about the nightmare that it would be to replace those membranes...

I like the way you fix it 1st then clean .. that's what I would do . loads of tubers get it all cleaned up 1st ! what a waste of time if it won't work !

oh, an infocom collection on display! that's very nice to see discreetly in the background on an unrelated video. And thanks for the channel, loving the repair videos, thorough investigations of a fault you do are quite informative on how these things work, not to mention the skills may be handy if I dare take on the task of building a kit computer myself ^_^

Apart of R53 you said pretty much everything there is to say about this machine. Great video!

Oh really thank you for this great video, I have same problem with MSX2 from Yamaha. Can you help me to know which ram is the vram ? Then I can replace it ?

Very good video Noel! I have taken the video regulation idea to see if it works with an SVI738 whose image is a little fuzzy.

Nice cool

Hot glue was sadly used for everything for awhile, it became the duct tape of electronics. Probably figured that the device wouldn't last long enough the be an issue anyway.

I can't remember ever seeing a home computer with "home computer" on the front of it.

I just recently found your channel and have been enjoying catching up on all of the old videos. The items you feature are a bit older than what I'd be interested in collecting, but it's really enjoyable to watch your process for repairing them (the larger components used in the era also help, both for the debugging and for following your steps). A small thing I noticed on this video, which you might have already fixed on later videos - I'm watching them out of order - is that your TV makes a high pitched noise. It'd be great to add a low-pass filter to remove that. Not exactly sure where the cutoff should be, but I think the noise is around 15 kHz. Google also says that that seems to be a common frequency for cathode ray tubes.

That's some "special sauce" there... Reminds me of the botched modchip jobs done a few years ago by amateur modders off of eBay...

Noel..necesito tu ayuda…te he encontrado en un foro de Msx ..hace un par de años intentaste arreglar un par de msx 8250 que se quedava la luz de la tecla de capslock bloqueada y pantalla negra……yo tengo un vg-8235 y me pasa lo mismo ,, entiendo bastante de el tema revise todas lineas..osciloscopio..etc….no se que mas hacer..tu lo solucionaste? gracias de antemano.

Love your repair vidoes

OK...say what you will about Commodore....I never opened a C64 or VIC-20 to find everything held in place with glue!! LOL. That's awesome.

Well done! nice video everything seems too easy! :-) (naturally, I'm joking...)

Great videos. You're a brave man putting it all back together and then testing it. ;-)

why not rplace the clear ribbon calbes with plug and socket as it is soldered to kb pcb and mb pcb

Which desoldering gun is that?