Hi, everyone,
I recently bought a vintage Mac SE (with 2 floppy drives) on eBay. But it had a very bad CRT. I mean I could bear the burn-ins, dimmed screen due to less eletrons available due to age, but I encoutered some very bright bleeding/smearning lines to the right of black frames/edges/lines.
(see attached links)
I don't know what caused these, because the failure mode of CRT that I expected was that it will dim due to less available eletrons from the electron gun's filaments, but not this kind of non uniform bright bleedings to the right. I hasn't recap the AB yet, but a quick search shows that recap didn't help:https://68kmla.org/forums/topic/60642-se30-crt-ghosting-bleeding-to-the-right/
also: https://www.reddit.com/r/crtgaming/comments/d0hnmx/seeking_help_with_a_streaking_problem_on_my_pvm/
I would like to know if this is a CRT problem meaning that this CRT is bad (has internal shorts?) or what caused this? I no longer want to invest in this **** thing since I've spent way to much on it.
Is there a cheap way to repair it without buying a tube (which are hard to find now unless I buy a new SE).
Thanks a lot.
I recently bought a vintage Mac SE (with 2 floppy drives) on eBay. But it had a very bad CRT. I mean I could bear the burn-ins, dimmed screen due to less eletrons available due to age, but I encoutered some very bright bleeding/smearning lines to the right of black frames/edges/lines.
(see attached links)
I don't know what caused these, because the failure mode of CRT that I expected was that it will dim due to less available eletrons from the electron gun's filaments, but not this kind of non uniform bright bleedings to the right. I hasn't recap the AB yet, but a quick search shows that recap didn't help:https://68kmla.org/forums/topic/60642-se30-crt-ghosting-bleeding-to-the-right/
also: https://www.reddit.com/r/crtgaming/comments/d0hnmx/seeking_help_with_a_streaking_problem_on_my_pvm/
I would like to know if this is a CRT problem meaning that this CRT is bad (has internal shorts?) or what caused this? I no longer want to invest in this **** thing since I've spent way to much on it.
Is there a cheap way to repair it without buying a tube (which are hard to find now unless I buy a new SE).
Thanks a lot.