First post, by VileR
Finally managed to source a CGA RGB monitor locally. Not the 5153 I've been after, but beggars can't be choosers.
Meet the patient:
It doesn't give the best picture I could hope for - there's hardly a difference between red and brown (colors #4 and #6). And dark grey (#8) is just missing - it's completely black regardless of any brightness/contrast knob twiddling.
But the main problem is a deficiency in uh, stamina. When you power it up, the image looks alright at first:
However, pretty quickly you start noticing that the RED component is fading away, and some of the brightness with it.
Here's what the above screen looks like after three minutes... it only goes south from there:
Obviously it hasn't aged well.
Now, in my neck of the woods, color CGA monitors are every bit as common as unicorns that shit weapons-grade plutonium bricks. I don't know why that is, but my best bet is to try and get this one fixed.
One diagnosis I got is that the caps must be bad, and presumably recapping the thing would solve the issue.
- If so, which caps should I be looking for? I assume something related to the driving of the emitters, but that's the limit of my guessing power.
- Any second opinion on that? Could it be something completely different?
I've never been on a first-name basis with the innards of a CRT, so getting my bearings here is a bit difficult.
It might be simpler if I had the service manual,
but it's only "available" (for a price) on shady websites that all look like scams... so if anyone knows a legit source, that could help too. EDIT: found it.