Awesome video! Loved the pacing and your methodical approach. The CoCo2 is also new to me, and your explanations were a great introduction. Looking forward to part 2! (and 3 and 4 and...) 😀
Even though Tandy is not my thing, the production quality of your videos and wonderful sense of humor always make these enjoyable to watch no matter the subject matter. I suppose we all have to step outside our Commodore comfort zone once in a while... so I'm looking forward to part 2! ;)
Thank you. Yes, way outside my comfort zone, but I have to say I am learning a lot and it is a nice change. Thanks for you positive feedback, as always.
After all these years, the tamper proof sticker still works! Hindsight is 20/20 so maybe just pucturing the label for the screw hole would have been the way to go.
@@MindFlareRetro It's definitely too much effort for my tiny brain, but I can appreciate the effort. We all have our things, and one of yours is including a golden shot or transition most episodes :)
Great video! Very thorough and I love the camera work in your close-up shots. The heat sink on my CoCo2's power transistor was bent the same as yours. Looking forward to part 2. Good luck!
Thanks very much for your positive feedback. Yes, I've watched a few other CoCo 2 videos and the heatsink fins all seem to be bent that way from the factory. Strange to me, but it seems to be the norm.
Well done! I enjoyed your video a lot. The second I saw that transistor at 28:01 I knew it was toast. I've replaced similar ones in Commodore 1541's a bunch. The "domed" appearance of the top of the transistor gives it away. They are flat when they are new. :)
Oh, I didn't notice it was domed. I haven't had much experience with dead TO-3 packages. I have replacements now and will compare. Thanks for the info. 👍
Thank you very much for your kind words. I do work very hard on these videos and it's nice to hear such positive feedback. Thank you again for commenting and for watching.
@@MindFlareRetro you are welcome. I stole the idea from LockPickingLawyer. He has a video where he did that with a security label. Search TH-cam.. you'll find it
@@MindFlareRetro fab! Your videos have really inspired me to, maybe do my own little video one day, I have some things I'd like to show off one day.... Cheers!
I just saw a video on fixing a star wars arcade cabinet. It had transistors like this one different part numbers, but they were can type. 4 out of 6 were bad. Replacing them gave him horizontal deflection and replacing the massive resistor that looks like a chunk of Styrofoam gave him the vertical deflection fixing the unit. I wonder if these types of transistors aren't reliable over this amount of time.
Hmm. Interesting. After a lot research I did find an older exact Motorola equivalent power transistor and a contemporary model that is 90% compatible specs-wise. I just received them last week so fingers crossed.
Absolutely outstanding, top quality video as usual. Those sockets look proper old school and the 'rf shielding' looks like something out of a 1960's space program! The noises that chip pulling tool was making didn't sound very reassuring lol. Maybe try Q1 on a cheap component tester to see if it is OK or remove it and inject voltage after it? Looking forward to part 2.
Thank you, sir. OMG, yeah, those chips were in there TIGHT! I definitely plan to test Q1 in my cheapy component tester. In fact, I have sourced and just received, NOS compatible power transistors and will compare. Thanks for commenting and for the positive feedback, as usual.
All my coco's had bent fins on the heatsinks, so yes it is normal... i opened up 2 coco1's and one was never opened before... (still sealed with sticker). I had one of my board power connecter break off the board when fedex damaged it in the mail, so added a quick release crimp in 16AWG to complete the power connections... Enjoying your venture into coco territory... And that coco2 board is HALF the size of a coco1 board yet I think they are close to the same specs.
Thanks for the bent fin. I am still a stranger to Tandy repairs and have to admit this has been a challenge for me. I really do need to get on with part 2 - at this rate I'll save it for the next SepTandy. 😂
lol if you think that's dirty you should have seen the C64 I fixed up starting a year ago. It mostly is in good order now, but the DIN cable I bought for the power is trash. I'm considering buying a real C64 PSU and using the cable off it for my home made PSU. I just don't want to solder a DIN.
The other interesting thing is how all the component leads are all nicely bent so they cannot pierce the protective coating of the cardboard shielding.
Thanks. I'll look at it again. Most if them have black ink across the too (from the printing of the values). Some of them look burned but it's just the dark ink. I *will* look at this again - thanks for commenting.
Where's Part 2? The CoCo 2 was my first home computer. It was pretty primitive and obsolete by the time I got mine, so I don't think I appreciated it very much as a kid. But it was a computer in my home in the '80s, and that had to count for something.
I need to score a Tandy and do Septandy Next year. I never owner a Tandy/Dragon but I know the 68xx CPUs very well, so I am sure I could do some little fun assembly programs on it. But here in The Netherlands they are really rare.
Hi Rudy. Thanks for reaching out. Yes, I have been really busy for the past several months with a new position at work and family obligations. I do plan to make more videos, for sure. I have a lot of interesting retro goodies piling up. 😉
Oh, crap! Really?!?!? Such a noob move. I was - or so I thought - very careful with the positions of the chips when removing and replacing them. I need to go back and examine my before photos and video clips of the PCB. I wonder if this computer was worked on in the past and the chips replaced incorrectly -- the Service Manual does list the "Tamper Label" as a replaceable item (PN 8789090). Or... more likely my error. Thanks for bringing my attention to this.
It's official... I screwed up. The orientation was correct when I first opened the case. I placed the ROMs the wrong way around (A-B, instead of B-A) in the temporary storage box. A great observation on your part! Well done. Thanks for letting me know.
Good point. Once I started I couldn't stop. ;) Actually, I was intending to deep clean the case in an upcoming video: soap, water, retrobrite, so the label would not have survived.
@@retrohaxblog Not lame at all! Great work! I am working on a similar clean-up routine, although, I haven't had to dismantle the keyboard... yet. I wish the warranty sticker had survived on mine, but it was an all paper type and would not have survived the water bath anyway. Yours cleaned up very well, indeed -- this CoCo3 looks fantastic. Well done.
@@MindFlareRetro Thank you! To be honest, I was kinda happy and sad at the same time lol. Happy, because it was an easy job and sad … because it was an easy job hahaha
Fun fact, even though I know it's a joke, RetroManCave has no claim to ownership of trash to treasure. especially seeing as there was a tv show called that a few years back :D
That is a good fact to know. Now I can get RMC to stop pestering me for royalties. 😉 In a more serious note, your comment tells me that you stuck around until the end of the video. Thanks for that. It means a lot. 👍
Yeah. My apologies. I've been super busy with other life stuff. Nothing serious, just super busy. If it's any consolation, here is 55 seconds of post-Retrobrighting slo-mo CoCo 2 key cap rinsing - made just for you 😉... th-cam.com/video/Mao062AIcwY/w-d-xo.html
It was literally just placed in the box with loose refuse packing material. the shot of me lifting the top of the box is the actual opening of the package.
At least you didnt test the PSU with a paperclip 😂
Meow!😂
This isn't a rare prototype.
LOL. It crossed my mind but... =/
it's not like it worked. It just doesn't work more than it didn't work before. lol
Owwwwwch
Nicely done Mark and I genuinely laughed out loud at that final reaction XD
Thanks Neil. And thank you for helping out. It certainly makes these type of potentially dry videos a lot more palatable.
Awesome video! Loved the pacing and your methodical approach. The CoCo2 is also new to me, and your explanations were a great introduction. Looking forward to part 2! (and 3 and 4 and...) 😀
Thank you very much. Likewise, aside from your always interesting content, I do appreciate and enjoy the structure and pace of your videos, as well.
Even though Tandy is not my thing, the production quality of your videos and wonderful sense of humor always make these enjoyable to watch no matter the subject matter. I suppose we all have to step outside our Commodore comfort zone once in a while... so I'm looking forward to part 2! ;)
Thank you. Yes, way outside my comfort zone, but I have to say I am learning a lot and it is a nice change. Thanks for you positive feedback, as always.
After all these years, the tamper proof sticker still works! Hindsight is 20/20 so maybe just pucturing the label for the screw hole would have been the way to go.
28:13 Whoah, what a transition to the 3D model! THIS is why you don't release more videos :)
Thanks. I tend to get bogged down with fun visual ideas. It's often worth it in the end, but a lot of effort for my little brain.
@@MindFlareRetro It's definitely too much effort for my tiny brain, but I can appreciate the effort. We all have our things, and one of yours is including a golden shot or transition most episodes :)
@@8_Bit It's all about the money shot.
Well worth the wait, bring on part 2 for OcTandy. Better do it fast before Neil makes his way across the pond
He's welcome anytime, but not if he's here to repo my home. ;)
@@MindFlareRetro Hope you got that express written permission!
@@jNetDowling LOL. Shhh. I didn't. ;)
@@MindFlareRetro I won't tell him if you won't. Canuck's honour!
Great video! Very thorough and I love the camera work in your close-up shots. The heat sink on my CoCo2's power transistor was bent the same as yours. Looking forward to part 2. Good luck!
Thanks very much for your positive feedback. Yes, I've watched a few other CoCo 2 videos and the heatsink fins all seem to be bent that way from the factory. Strange to me, but it seems to be the norm.
Great video mate 👍 Looking forward to the next one.
Thank you! And thank *_you_* for being Captain SepTandy!
Whoa, #OctTandy wasn't necessary after all!!
LOL. Keep in mind this is only Part 1. 🤔
@@MindFlareRetro Oh yeah! Then I'm looking forward to #OctTandy, #TandyWeen, #NovTandy, #TandyMas and many more :)
@@8_Bit It's retro madness!!!
#Orictober
@@PJBonoVox Brilliant, we should make that a thing!
What a great video ... and the surprise ending (the decision maker thingy), just awesome! Thanks!
Haha. Thanks! I have had that thing for decades. Who knew it would turn up in SepTandy video. Thanks for noticing!
Haha, nice RMC cameo!
LOL. Thanks for sticking around to the end.
Great Video and I would have watched another 30 minutes, it was a perfect companion to my morning coffee.
Thanks, Lee. I am glad you enjoyed it.
Well done! I enjoyed your video a lot. The second I saw that transistor at 28:01 I knew it was toast. I've replaced similar ones in Commodore 1541's a bunch. The "domed" appearance of the top of the transistor gives it away. They are flat when they are new. :)
Oh, I didn't notice it was domed. I haven't had much experience with dead TO-3 packages. I have replacements now and will compare. Thanks for the info. 👍
Nice one 👍😁 I cannot wait for the next installment
Thanks very much, Tony. 😊
Superb video. Your techniques are very professional and attention to detail is ace!
Thank you very much for your kind words. I do work very hard on these videos and it's nice to hear such positive feedback. Thank you again for commenting and for watching.
Great video greetings from Australia
And greetings to you from Canada! Thanks for your positive feedback. I am glad you enjoyed the video. Part 2 is coming at some point.
On labels, Inject mineral spirits under with a syringe. They come off. When it dries you can reapply.
A great tip! Thanks very much!
@@MindFlareRetro you are welcome. I stole the idea from LockPickingLawyer. He has a video where he did that with a security label. Search TH-cam.. you'll find it
@@jimb032 I watch his videos every so often. I will look for that one.
Brilliant video Mark!👍🤓
Cheers Gaz. Thanks for your always positive support and feedback.
@@MindFlareRetro It's been a while but I always enjoy your content!👍🤓
Check the resistors visible at 19:25. The leads are corroded and they may be open or not electrically connected to the traces any longer.
Yes! I didn't make mention of those in the video. I did clean them up quite a bit but I probably should just replace them. Thanks for your input.
Super video! Just discovered your channel, great stuff, looking forward to see more!
Hi. Thanks very much. I'm glad you found me. Yeah, working on part 2 slowly but surely.
@@MindFlareRetro fab! Your videos have really inspired me to, maybe do my own little video one day, I have some things I'd like to show off one day.... Cheers!
@@mogwaay Well, be sure to let me know if you do produce any videos. 👍
I just saw a video on fixing a star wars arcade cabinet. It had transistors like this one different part numbers, but they were can type. 4 out of 6 were bad. Replacing them gave him horizontal deflection and replacing the massive resistor that looks like a chunk of Styrofoam gave him the vertical deflection fixing the unit. I wonder if these types of transistors aren't reliable over this amount of time.
Hmm. Interesting. After a lot research I did find an older exact Motorola equivalent power transistor and a contemporary model that is 90% compatible specs-wise. I just received them last week so fingers crossed.
Absolutely outstanding, top quality video as usual. Those sockets look proper old school and the 'rf shielding' looks like something out of a 1960's space program! The noises that chip pulling tool was making didn't sound very reassuring lol. Maybe try Q1 on a cheap component tester to see if it is OK or remove it and inject voltage after it? Looking forward to part 2.
Thank you, sir. OMG, yeah, those chips were in there TIGHT! I definitely plan to test Q1 in my cheapy component tester. In fact, I have sourced and just received, NOS compatible power transistors and will compare. Thanks for commenting and for the positive feedback, as usual.
@@MindFlareRetro WD 40 on the pins, a little dab'ill do you to facilitate in and out.
@@pvanb2 Thanks! I will give that a try.
A genuine Trash-80.
Yeah. Here's hoping I can rectify that. 😉
There goes your warranty
Yup. I did my best with that label, but I was unsuccessful. :(
haha good effort anyway👍🏻
All my coco's had bent fins on the heatsinks, so yes it is normal... i opened up 2 coco1's and one was never opened before... (still sealed with sticker). I had one of my board power connecter break off the board when fedex damaged it in the mail, so added a quick release crimp in 16AWG to complete the power connections...
Enjoying your venture into coco territory... And that coco2 board is HALF the size of a coco1 board yet I think they are close to the same specs.
Thanks for the bent fin. I am still a stranger to Tandy repairs and have to admit this has been a challenge for me. I really do need to get on with part 2 - at this rate I'll save it for the next SepTandy. 😂
I thoroughly enjoyed this video! Can't wait for the next part!
Thanks so much, Rich. I am happy to hear that you enjoyed it. 😃
lol if you think that's dirty you should have seen the C64 I fixed up starting a year ago. It mostly is in good order now, but the DIN cable I bought for the power is trash. I'm considering buying a real C64 PSU and using the cable off it for my home made PSU. I just don't want to solder a DIN.
Yeah, round DIN soldering is not my favourite task in the world.
The other interesting thing is how all the component leads are all nicely bent so they cannot pierce the protective coating of the cardboard shielding.
The small disc capacitor on the right side in the RF modulator looks like it has blown 25:50
Thanks. I'll look at it again. Most if them have black ink across the too (from the printing of the values). Some of them look burned but it's just the dark ink. I *will* look at this again - thanks for commenting.
Where's Part 2? The CoCo 2 was my first home computer. It was pretty primitive and obsolete by the time I got mine, so I don't think I appreciated it very much as a kid. But it was a computer in my home in the '80s, and that had to count for something.
I need to score a Tandy and do Septandy Next year. I never owner a Tandy/Dragon but I know the 68xx CPUs very well, so I am sure I could do some little fun assembly programs on it. But here in The Netherlands they are really rare.
Yeah, Noel's Retro Lab just did a Tandy/Dragon comparision that's a good watch. This CoCO 2 of mine is still kicking my butt.
@@MindFlareRetro I noticed that there's no part 2 *yet*
Did you find the transistor?
Hello sir! Are you planning to make more videos? Haven't seen any. Hopefully you are just busy :)
Hi Rudy. Thanks for reaching out. Yes, I have been really busy for the past several months with a new position at work and family obligations. I do plan to make more videos, for sure. I have a lot of interesting retro goodies piling up. 😉
No Part 2?
It would be interesting if the Q1 regulator can be replaced with a 7805 in a TO-3 package, such as that on the 1541 drives.
Nice video, thanks!
Thanks, Tommy. I still a couple of your videos to catch up on too.
It feels like #epTandy isn't as popular this year.
There are TH-camrs making #SepTandy videos (Adrian Black just posted one), it's just not an organized YT event this year, unfortunately.
Nice Video, but you swapped the U12 & U13 (Primary ROM & Extended Basic ROM) after cleaning ..
Oh, crap! Really?!?!? Such a noob move. I was - or so I thought - very careful with the positions of the chips when removing and replacing them. I need to go back and examine my before photos and video clips of the PCB. I wonder if this computer was worked on in the past and the chips replaced incorrectly -- the Service Manual does list the "Tamper Label" as a replaceable item (PN 8789090). Or... more likely my error. Thanks for bringing my attention to this.
It's official... I screwed up. The orientation was correct when I first opened the case. I placed the ROMs the wrong way around (A-B, instead of B-A) in the temporary storage box. A great observation on your part! Well done. Thanks for letting me know.
Noticed a relay on the board near the RF modulator? Strange
That's to control the cassette motor.
@@Starchface Ah cool thanks, that makes sense
Is Part II coming for SepTandy 2021? 😊
LOL. Apologies that it is taking so long. Much of it is recorded. I have just been super busy unfortunately.
@@MindFlareRetro No worries, I'm just happy that you replied...it means that you are still around and kicking! The video will come when it comes.
@@Buelldozer Oh, yes, I am still around, just been busy with a lot of life stuff these past months. Thanks for checking in on me. 😊
You should've just removed the left-side of the warranty void sticker far enough to extract the screw
Good point. Once I started I couldn't stop. ;) Actually, I was intending to deep clean the case in an upcoming video: soap, water, retrobrite, so the label would not have survived.
Excellent job! My #septandy entry was a bit lame lol :D
Thank you. I doubt yours is lame. Have you uploaded a video?
@@MindFlareRetro Nope, only a blog post -> retrohax.net/septandy-coco3/
@@retrohaxblog Not lame at all! Great work! I am working on a similar clean-up routine, although, I haven't had to dismantle the keyboard... yet. I wish the warranty sticker had survived on mine, but it was an all paper type and would not have survived the water bath anyway. Yours cleaned up very well, indeed -- this CoCo3 looks fantastic. Well done.
@@MindFlareRetro Thank you! To be honest, I was kinda happy and sad at the same time lol. Happy, because it was an easy job and sad … because it was an easy job hahaha
@@retrohaxblog Yeah, I get it, but there are times when I just plain want easy.
Fun fact, even though I know it's a joke, RetroManCave has no claim to ownership of trash to treasure. especially seeing as there was a tv show called that a few years back :D
That is a good fact to know. Now I can get RMC to stop pestering me for royalties. 😉
In a more serious note, your comment tells me that you stuck around until the end of the video. Thanks for that. It means a lot. 👍
:D I'ts all good fun - and today I discovered I can actually talk that fast! 😉
@@MindFlareRetro You are welcome. I love videos on restoring old tech
@@RMCRetro LOL :D
It's been 6 months, where's part 2???
Yeah. My apologies. I've been super busy with other life stuff. Nothing serious, just super busy. If it's any consolation, here is 55 seconds of post-Retrobrighting slo-mo CoCo 2 key cap rinsing - made just for you 😉... th-cam.com/video/Mao062AIcwY/w-d-xo.html
@@MindFlareRetro It was so, so... Erotic! LOL
@@jimmywubs7381 LOL. I looked for royalty free "porn groove" music but I had to go with YT canned music. Still worked out okay.
It's been 11 month's. Weres the 2nd video?
Part 2 is coming - I promise. Here's a teaser clip for you, th-cam.com/video/Mao062AIcwY/w-d-xo.html. 😃
other youtubers mentioned you had a video. youtube did NOT tell me. sigh....
Well, I'm glad you found the video in the end. Thanks for watching. Subbed with bell icon clicked? Just asking. 😊
Part 2?
Part 2 is in the works. Slowly, but surely. Here's a teaser clip for you, th-cam.com/video/Mao062AIcwY/w-d-xo.html. 😃
@@MindFlareRetro nice, thank you, it is very interesting
Thank you. I hope that you find Part 2 interesting, as well.
Horrid packing jobs damage far too many classic PCs according to videos found on TH-cam.
It was literally just placed in the box with loose refuse packing material. the shot of me lifting the top of the box is the actual opening of the package.