ChaosJohn
Active member
So this 6100 was working mostly fine in my Star Wars for the last year or so. Recently, it went into a mode where you could see the lines from the center of the screen to the edges of every vector it was drawing. You could still see all the elements of the game and play it, but it was way overdrawing.
So I decided to finally install that deluxe 6100 cap/etc kit I got from Bob Roberts.
I replaced all the caps, resistors, transistors (including the chassis mounted ones), and diodes provided in the kit. His kit includes most of the upgrades described in the manuals for repairing 6100 monitors that are floating around the net.
I'm generally very careful about making sure I'm putting the right part in the right place and getting the positive leg of caps in the positive hole, and things like that. But somehow I must have missed something this time. I almost put the ZD902 of the HV board in D902 (apparently a common mistake), but caught myself in time by double checking the board after pulling the old component.
When I put the monitor back together, wired it up to the game and turned it on, I heard a loud CRACK and immediately unplugged it. When I checked, the 3 diodes at D100, D101, and D102 had popped.
I've bought replacements for those (and D103 as well), and I'll re-install those and go over every part I replaced and check all the solder points to make sure I didn't create any shorts (I checked the solder of pins of the 4 transistors on the deflection board verrrry closely, but maybe I missed somewhere else).
Anyway, I'm posting here to see if anyone has an idea what would I might have done wrong that would cause those diodes on the deflection PCB to pop. Or if anyone here has had that problem, and what they did to fix it.
Any help would be appreciated.
So I decided to finally install that deluxe 6100 cap/etc kit I got from Bob Roberts.
I replaced all the caps, resistors, transistors (including the chassis mounted ones), and diodes provided in the kit. His kit includes most of the upgrades described in the manuals for repairing 6100 monitors that are floating around the net.
I'm generally very careful about making sure I'm putting the right part in the right place and getting the positive leg of caps in the positive hole, and things like that. But somehow I must have missed something this time. I almost put the ZD902 of the HV board in D902 (apparently a common mistake), but caught myself in time by double checking the board after pulling the old component.
When I put the monitor back together, wired it up to the game and turned it on, I heard a loud CRACK and immediately unplugged it. When I checked, the 3 diodes at D100, D101, and D102 had popped.
I've bought replacements for those (and D103 as well), and I'll re-install those and go over every part I replaced and check all the solder points to make sure I didn't create any shorts (I checked the solder of pins of the 4 transistors on the deflection board verrrry closely, but maybe I missed somewhere else).
Anyway, I'm posting here to see if anyone has an idea what would I might have done wrong that would cause those diodes on the deflection PCB to pop. Or if anyone here has had that problem, and what they did to fix it.
Any help would be appreciated.
