Just did something stupid... hope I didn't ruin my monitor :(

EvilEmuOfDoom

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Just did something stupid... hope I didn't ruin my monitor :(

So, I was working on my MK2 cab tonight and did something horribly stupid... I had a K7191 chassis that I hadn't even tried since it was "bad" and had one visibly bad cap and the flyback with white knobs on it. So, I just went ahead and recapped it and replaced the flyback. I hooked it up tonight along with doing some other wiring on the cab and putting the PCB back in, etc. Anyway, I forgot to connect the anode... I know, I know, pretty freaking big mistake. Anyway, I didn't realize the switch was "on" (probably a good thing) and plugged the cab in just long enough to see/hear horrible arcing (looks like to the monitor bracket) and quickly unplugged it. After making sure everything was safely discharged just in case, I hooked it up and powered it on. The game boots and plays although the screen has a wide horizontal bar on it. Now, this could be nothing since when I was working on the chassis I thought it odd that the horizontal coil was adjusted so far that the black screw piece was sticking out of the top about 2mm. I adjusted it back down before installing the chassis so I'm guessing it could simply be that it needs to be adjusted.

However, the reason I'm posting this before messing with it more is that I noticed the resistor behind the flyback (to the left of the flyback if you're looking into the back of the cab) was glowing orange! So, did not connecting the anode damage something or do you think there is some other problem?
 
So, I was working on my MK2 cab tonight and did something horribly stupid... I had a K7191 chassis that I hadn't even tried since it was "bad" and had one visibly bad cap and the flyback with white knobs on it. So, I just went ahead and recapped it and replaced the flyback. I hooked it up tonight along with doing some other wiring on the cab and putting the PCB back in, etc. Anyway, I forgot to connect the anode... I know, I know, pretty freaking big mistake. Anyway, I didn't realize the switch was "on" (probably a good thing) and plugged the cab in just long enough to see/hear horrible arcing (looks like to the monitor bracket) and quickly unplugged it. After making sure everything was safely discharged just in case, I hooked it up and powered it on. The game boots and plays although the screen has a wide horizontal bar on it. Now, this could be nothing since when I was working on the chassis I thought it odd that the horizontal coil was adjusted so far that the black screw piece was sticking out of the top about 2mm. I adjusted it back down before installing the chassis so I'm guessing it could simply be that it needs to be adjusted.

However, the reason I'm posting this before messing with it more is that I noticed the resistor behind the flyback (to the left of the flyback if you're looking into the back of the cab) was glowing orange! So, did not connecting the anode damage something or do you think there is some other problem?

Unless your anode arced to the chassis itself, I'd say it's a different problem. Powering on the chassis without the anode connected shouldn't do any damage as long as the high voltage doesn't arc anywhere it shouldn't In fact I watched Chris25810 test flys like that on monitors. He'd power up the chassis, wave the anode boot near the frame, and 'snap' - "OK, the fly's good," he'd say :p

A glowing resistor is likely due to another failed component on the chassis, or a solder bridge somewhere. Check your solder work. Has the chassis been recapped?
 
Unless your anode arced to the chassis itself, I'd say it's a different problem. Powering on the chassis without the anode connected shouldn't do any damage as long as the high voltage doesn't arc anywhere it shouldn't In fact I watched Chris25810 test flys like that on monitors. He'd power up the chassis, wave the anode boot near the frame, and 'snap' - "OK, the fly's good," he'd say :p
Nice, well at least that's relatively good news.

smalltownguy2 said:
A glowing resistor is likely due to another failed component on the chassis, or a solder bridge somewhere. Check your solder work. Has the chassis been recapped?
I just recapped it and replaced the fly, although its only the 2nd one I've ever done :D.
 
R92 is the resistor that is glowing. I'll pull the chassis this weekend and go over it again. I did have to reflow 3 or 4 bad solder joints so I'm not surprised it needs something else. Worst case I have another K7191 waiting to be recapped that I could throw in.

Thanks!
 
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