Mac Classic II - Thin Line CRT Repair

[@Kikay0n]

Dude. You just low-key dropped that you created an interface for the board using an LCD monitor and moved on. LOL I want to see THAT tutorial! =)

[@NaokisRC]

Lol its not that special, just a monochrome VGA like signal with H sync and V sync going into a monitor. The 22khz vsync is an oddity but otherwise its mostly direct connections to a VGA plug.

[@Garoninja]

The people need more old timey "How To with Naoki"

[@8bitsinthebasement]

Really enjoyed that one, well done on finding the bad resistor. Oh, and nice job on rooting out the "old osilloscope informational video" ;)

[@itsanarse]

Finally! A good end to the video

[@TechGameDev]

The line amp There is a very bright horizontal line in the middle of the screen? Or possibly vertical? Again, it's a big transistor that heats up that passed the weapon to the left. Changing it often brings the TV back to life

[@NaokisRC]

I explain in the video that a single burnt out resistor caused the deflection driver IC to not have any power, replacing it fixed the issue.

[@gilbertvera1678]

I found part 2 thank you :)

[@NaokisRC]

No problem 😊

[@gilbertvera1678]

@@NaokisRC what was it besides the ohm to turn up the brightness ?

[@martinprehjan9944]

This here is what I used to call the "Laurence of Arabia" fault/issue! (Quite common to CRT TVs too!!!)

[@zero0ryn]

Ahhh. soon you will learn that it's never the chip :) (well mostly not) When I used to repair things with both chips and glass bubbles there was a rule that said - "The more pins it has, the less likely it is to be faulty." Your TEA IC doesn't have that many pins so you could have been right :P

[@NaokisRC]

I had read the chip could fail on forums, hence why I looked. I actually tested every single component after abd thats how i found the bad resistor

[@zero0ryn]

@@NaokisRC If you watch back your video theres a part where you are probing the TEA chip. the only pins on that chip were showing any kind of signal were input. there was a distinct lack of any DC on it. Well done for getting it going :) Now just see how hot that 10R resistor gets as it will be droping more voltage across it than the 1R one.