Re: Small triumphs in vector collecting

Flyback rarely failed in these B&W XY monitors, much more likely the HV
diode has given up. If you get the output voltages from the flyback but no
screen, then find an old B&W TV and see if the diode is there. Check some
TV repair shops for this diode as well...

John :-#)#

At 10:35 PM 3/6/2000 -0500, you wrote:
>There is no questions in this story but I had one of those small spurts
>of success today, that we all need when working on bring a game back
>from the dead . There are some interesting points I learned along the
>way that may be useful to the group
> I purchased 2 dead lunar Landers from an Op well over year ago. As I
>loaded them into my trailer his closing words were "maybe you can make
>one good one out of the two". Both cases are in B shape. And were
>complete with boards and monitors.
> Upon getting them home I proceeded to plug both of them in, checking
>for signs of life. One monitor had heater glow and the other had none. I
>put both in to test mode but got nothing in the audio department
>indicating life, so I packed them away for later, thinking I was in for
>at least one monitor and 2 boards.
> About a month ago another collector showed interest in a trade
> for one
>of my LLs for his Star Wars so I figured I was time to get going on the
>repairing of these machines. It had been over a year now and I had
>collected 2 spares B&W monitors (one GO5 and one WG19200) as well as a
>known working board set.
> Opening the first machine up I found a bunch of cut wires I
> didn't see
>before. Some wires were for the audio and some for monitor connections.
>Once I wired it all back together I had heater glow on the totally dead
>monitor (Small triumph one)
> I pulled both monitors for cap kits. I Emailed bob Roberts for 2 G05
>cap kit and they arrived days later. I wasn't until I went to put them
>in that I realized that many of the parts were wrong. For those who
>don't know (and I was one of those people until now), Electrohome made 2
>versions of GO5. The G05 (TM-146) and the G05 (TM-151) The G05
>(TM-146) was made in small numbers and it distinctive in the fact that
>it has a separate power supply, rather then having the power built into
>the deflection board. As it turns out, I have the rarer G05 (TM-146) in
>both of may machines. Frustrated that I could not do my cap kits that
>night I unpacked the 2 spare working monitors I had picked up over the
>past year. I had never opened them so when I did, I discovered a G05
>TM-151 model and a WG 19v200. Both units have the same pin out in the
>connection plug between them selves, but the Lunar Lander machines I
>have are wired for the G05 (TM-146), which it totally different using 2
>connectors for the power and x y signals.
> Two make a long story short, I made an adapter cable to mate the
> older
>wiring to the more common monitors and plugged it in today. Holly crap
>the thing came up and my board worked! Excited I pulled d the board for
>the other machine to try it as well, and that works too! I the realized
>that the reason the one machine did not come up in a "blind test" was
>that the audio wasn't working on one machine and the plug it a bit funky
>on the other machine so it doesn't always go into test mode. But 2
>working board and I monitor set up that is usable ! Woo hooo!
> Anyway. I'm going back to see if I can get the original monitors
> up ad
>working as one of them has zero screen burn. Alas, I suspect that the
>flybacks are dead on both so If anyone has some to offer send me an
>Email.
>
>-=Mark=-
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  John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
  Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
  http://www.flippers.com
         "Old pinballers never die, they just flip out."

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Received on Tue Mar 7 23:58:50 2000