Re: Sega xy help

An update on my Space Fury, I found some more 2114's so I replaced
all of them on the xy board & shuffled them around on the CPU board.
Now it boots up fine, attract mode looks normal. After playing a
few games on the scope, the only vector problem I have seen so far
is that the 'ship' will get trashed, all other vectors are OK. When
you get hit or go to the next level, the ship will look OK for a while,
then get garbled up. It will also go all the way through the self test
now, only that some speech & sounds are missing or garbage.

 Confident that the
boards are now more stable, I hooked up the monitor so I could read
what the self test was reporting. The monitor powered OK, I played a
few
quick games, intermittently the top half of the screen would go flat,
so I quickly went to the self test, the first screen said that the
video ram & multiplier were good, but down in the lower right corner
there was a 'B', what does that stand for ? When I got to the system
input screen, tells what dip SW settings are, the text was jumping
around, some letters would displace up or down a line. By this time
the top half of the screen was collapsing more often, so I powered it
down, pulled out the deflection board.

 After inspecting the board &
the 2 daughter boards that go to the heatsink/transistor assembly, I saw
a few cold solder joints. I wicked/reflowed all the Molex connectors,
cleaned transistor sockets & reassembled. Still no top half of the
screen :( I am going to order a Zanen kit, but wasn’t there a
discussion
about him using underrated parts ? Knowing that the monitor is almost
%100, I want to do what ever it takes to make it as reliable as
possible.

Is there a FAQ like G Woodcock’s WG, but for the Sega monitors ?
Any suggestions would help, I don’t want to do any damage to this
monitor.

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Thanks
Todd