Hi Chris, It's time to get the multimeter out and start testing voltages. The black screen suggests the video chip is outputting something, but is the CPU alive? You can find schematics for your motherboard revision online and start probing to ensure it's getting power where it should be. I can't believe it's showing any signs of life to be honest! They don't make them like they used to haha!
Cheers for the tips. I've got as far as checking the voltage regulators at least after recording this. More probing to be done, and more cleaning too I think. Start simple. I'm surprised it's doing anything at all lol.
Great effort so far ! I'm thinking the whole board could do with a reflow of all the main solder joints? Christmas present for yourself is a new soldering iron 😊
Watch some "Jan Beta" or "Adrian Black" repair videos and you'll be an expert in no time :D It's always: Voltages, Clock, Reset signal, activity on different chips or my favourite: brute force chip swapping.
I'd keep working on cleaning that cartridge slot ! Maybe try something like INOX on the slot and work the cartridge in and out, then rinse it out with ISO.
Nice. Looks like the video part is working! That is more than I was guessing from the look of it. Enjoying this series so far! The fault should be on the cpu on the side of it. But hard to guess without measuring. Do the cpu stay ice cold (is it alive?)? Looking forward to next part!
I think as it stays black with no cart, and goes black white with a cart, (assume the working MD is doing the same in both cases) then its like its trying to run code or boot. I'd not focus on the physical slot other than maybe buzzing out the top of the pin to the underside of the board to confirm connection. this is likely the myriad of other things that go into starting a game. check voltage regs,. then I'd be tempted to reflow any bad looking joints. and caps I bet need swapping.
There’s an awful lot of corrosion on the video chip from what I could see. I’d start there after checking the cartridge port pins and traces. Good luck 🤞
Ideally, you'd go full Adrian Black, bust out the Oscilloscope, and check for CPU pin activity. But I don't imagine you've got one lying around. (I certainly don't!) Little tip on the Credit Card trick: Paper towels will tear, but *coffee filters* are designed to maintain their integrity when wet. I'm hardly an expert, but based on the behaviour, it looks like there's activity but the signals aren't getting through the circuit right. Which could be broken traces from the corrosion - definitely get the Multimeter out and do continuity tests; especially through the Vias, since those are easy to be lost to corrosion. Next thing to check is definitely the Caps - they might not be leaking, but I reckon that dry WA desert heat is likely to have cooked and dried out those caps, so it's definitely worth investigating those.
@@005AGIMA hard to say,you must test with a multimeter to check voltages. You must think that if the console was thrown away, perhaps she was already faulty .
@@1977Bonishow-man On the other side, people throw perfectly working stuff away as well. But yeah i'd get the multimeter out after cleaning up the slot a little more...
That would be cool but I'm not going to bring this over. If it becomes beyond me, there's another UA-camr in Perth that restores stuff. I may hit him up @Retrogameon I'm looking at you.
Thoughts @retrogameon ??? This may end up in your hands lol
0:25 "it came from the desert"
🤣🐜
Loving this mate cant wait for the next installment
haha does that mean I have to keep trying ? 🤣
@@005AGIMA yes please ha ha ive got into making restoration videos nowadays aswell and this is really interesting
Hi Chris, It's time to get the multimeter out and start testing voltages. The black screen suggests the video chip is outputting something, but is the CPU alive? You can find schematics for your motherboard revision online and start probing to ensure it's getting power where it should be. I can't believe it's showing any signs of life to be honest! They don't make them like they used to haha!
Cheers for the tips. I've got as far as checking the voltage regulators at least after recording this. More probing to be done, and more cleaning too I think. Start simple.
I'm surprised it's doing anything at all lol.
Great effort so far ! I'm thinking the whole board could do with a reflow of all the main solder joints? Christmas present for yourself is a new soldering iron 😊
I actually got a new soldering iron last Christmas :D It's still in it's box :D
catridge label should be facing you unless that catridge has no label
It has no label. It's the correct way round.
Watch some "Jan Beta" or "Adrian Black" repair videos and you'll be an expert in no time :D It's always: Voltages, Clock, Reset signal, activity on different chips or my favourite: brute force chip swapping.
Brute force Megadrive swap 🤣
I'd keep working on cleaning that cartridge slot !
Maybe try something like INOX on the slot and work the cartridge in and out, then rinse it out with ISO.
Good idea.
Nice. Looks like the video part is working! That is more than I was guessing from the look of it. Enjoying this series so far! The fault should be on the cpu on the side of it. But hard to guess without measuring. Do the cpu stay ice cold (is it alive?)? Looking forward to next part!
I feel the chips next time I test
give it to the 8 bit guy
But it's 16 bit. He'd have to repair it twice.
I think as it stays black with no cart, and goes black white with a cart, (assume the working MD is doing the same in both cases) then its like its trying to run code or boot. I'd not focus on the physical slot other than maybe buzzing out the top of the pin to the underside of the board to confirm connection. this is likely the myriad of other things that go into starting a game. check voltage regs,. then I'd be tempted to reflow any bad looking joints. and caps I bet need swapping.
All good places to start :)
I would have just done a chemical dip to remove all rust in one go.
Something to look into for sure.
Really picking up that Aussie accent now, eh?
She'll be right mate.
I leave you troll free for a bit and you get into Sega. The heck man. Are you buying Ataris now too!?
Atari is the troll :D
There’s an awful lot of corrosion on the video chip from what I could see. I’d start there after checking the cartridge port pins and traces.
Good luck 🤞
Could be
Ideally, you'd go full Adrian Black, bust out the Oscilloscope, and check for CPU pin activity. But I don't imagine you've got one lying around. (I certainly don't!)
Little tip on the Credit Card trick: Paper towels will tear, but *coffee filters* are designed to maintain their integrity when wet.
I'm hardly an expert, but based on the behaviour, it looks like there's activity but the signals aren't getting through the circuit right. Which could be broken traces from the corrosion - definitely get the Multimeter out and do continuity tests; especially through the Vias, since those are easy to be lost to corrosion.
Next thing to check is definitely the Caps - they might not be leaking, but I reckon that dry WA desert heat is likely to have cooked and dried out those caps, so it's definitely worth investigating those.
Good point re the caps sitting out in the heat.
yeHaw!!
Ride-em cowboy
It's very poorly I reckon, have you tried shaking it vigorously and shouting?
Good suggestion. I should also probably slap the TV on the side 🤣
Its dead mate
Well not totally... But mostly 🤣
@@005AGIMA trust me,its dead,let it rest ,give it a proper funeral mate .
In the words of Holly "They're dead Dave"
Some progress made mate👍👍
Looks like its time for a multimeter.
Yeah been poking around already
Mate that is rotten... But I have faith 😉😉 You'll get there buddy😎😎
You have more faith than me lol
@@005AGIMA 🤣😎🍺
That Megadrive has dead chip, thats why she was left in the desert
You're quite possibly correct. But which chip?
@@005AGIMA hard to say,you must test with a multimeter to check voltages. You must think that if the console was thrown away, perhaps she was already faulty .
@@1977Bonishow-man On the other side, people throw perfectly working stuff away as well.
But yeah i'd get the multimeter out after cleaning up the slot a little more...
Would be a cool idea to do a collab video with @markfixesstuff when you are in the UK :)
That would be cool but I'm not going to bring this over. If it becomes beyond me, there's another UA-camr in Perth that restores stuff. I may hit him up @Retrogameon I'm looking at you.