Main > Monitor/Video Forum
Battlezone Deflection PCB
HaRuMaN:
Ok, so the bridge rectifier was bad (no big surprise, it kept blowing fuses).
Put the board back in, the red LED is still on (spot killer?)...
But now, I get a green dot in the middle of the screen, with a horizontal green line through the middle. As I move the tank around, it seems like I can see changes in the horizontal line.
What do you call this? Horizontal collapse?
What should I do next? Help out a vector noob! :D :cheers:
Kevin Mullins:
Vertical Collapse (Y axis)
Don't run it very long like that, you'll burn a dot and line into your screen.
BTW - Which monitor do you have?
HaRuMaN:
I only ran it like that for like a minute...
It's a Battlezone upright, were there more than one monitor that came with it?
HaRuMaN:
Found this:
--- Quote ---1. Insufficient width or height:
A. Horizontal line (due to "Y" amplifier defection).
· Bad "Y" amplifier output transistors.
· Blown "Y" amplifier fuse.
· Open fusible resistor in the "Y" amplifier.
· Yoke pins not making good contact (very common).
· Bad yoke.
--- End quote ---
Kevin Mullins:
--- Quote from: HarumaN on February 26, 2010, 02:47:48 pm ---It's a Battlezone upright, were there more than one monitor that came with it?
--- End quote ---
Well, it's a B/W vector.... there's only a couple I could guess it to be..... but I don't like to "guess".
And it's hard to point you at specific things to look at on the deflection pcb without knowing which monitor it is. i.e. We can't say "check Q103" if we have no idea if we're looking at the same chassis as you have.
But IF I did have to guess... I'd say it was an Electrohome G05-802. ;)
I'd start by downloading the monitor manual, checking voltages at the harness connection, and checking all the 600 series components. (R6xx, Q6xx, D6xx, etc)
And of course ANY and ALL possibly bad/questionable solder joints anywhere on the deflection pcb.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version