The TIP-141 was probably fine when the power supply was new but in truth it is a combination of both the "on time" when heat is being generated and the thermal cycling when the substrate inside heats and cools repeatedly that both contribute to an ultimate failure. The latter is probably more...
If any Sega game uses what I call the "G80-style" power supply, which is the one shown three replies above, you can easily rebuild it following these steps. While not perfect (it is hard to remove the PCB for servicing) it is one of the better linear supplies from this era with one small, but...
It is difficult to make predictions that far into the future (so I won't). But I will provide some perspective specifically around CRTs.
Look around YouTube. There are several people who enjoy resurrecting and restoring old television sets from the 1950s onward. While not as large as the video...
I'll have to see what I have in my workshop. Sadly, many of the cages I have are missing the lid as well.
If I find one, I can scan on high resolution. But you still might need to do touchups. I know nothing I have looks as clean and white as this one!
Bad solder could have been the problem, but keep an eye on it for a little while. I'm starting to accumulate a small box of HV units that hiss and sputter without remedy, sometimes accompanied by an ozone odor. I've yet to see a G08 transformer crack open and explode like a G07 but some do...
Sorry for the late reply. I've been terribly busy lately moving my workshop from one location to another. I have some insight here that might help. The symptoms you're describing fall under POR but there is a specific part of that circuit that was modified because of (you guessed it) issues with...
Ah hah! Beat me to it! Yes, please check all the components in this circuit. I’ve seen several boards, especially early revisions, have broken solder here because they used the legs of the transistors and resistors to form traces that weren’t printed on the board.
If that does not solve the...
Thanks for posting the detailed photos. It's nice to see the arrangement of components and wiring inside a largely untouched cabinet for future reference. So many of these were converted (duh) to other configurations and bringing them back to original can sometimes pose a challenge.
For any...
I don't use the Vector Labs test pattern generator so I'm unfamiliar with its options and settings. Is this supposed to draw a white cross hatch or an individual color like red or green? The white dot in the center along with all the white retrace lines that should be blanked leads me to believe...
This should be picked up instantly!
If the person who grabs this needs the rest of the chassis, I have everything to make it complete on my website.
PS - Interesting monitor frame. Maybe it came from a cocktail cabinet?
I agree with @Dillweed. While I can't help you on sourcing logic boards, don't give up if you can't find them in a week or so. These are definitely worth saving given their condition. I see so many games like this get converted to something stupid or sold for parts due to impatience. Keep...