Party at Mike's part 2

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yotsuya:

--- Quote from: Mike A on March 25, 2019, 02:14:04 pm ---I thought you guys were my friends. ;D

--- End quote ---

Mike A:
Game line up as of today.

Centipede cocktail - working
Asteroids Deluxe cocktail - working
Rave Racer - working
Pleiades - working
Championship Sprint - working
Defender - working Using a JROK board until I fix my actual PCB
STUN Runner - working
Monaco GP cockpit - NOT working -not sure if I will ever get to it. There is an FPGA board in the works.
Pole Position 2 - working
Tempest - sort of working. I can play a few games and then it stops working. It is on the repair list.
Vanguard - working
Pac Man cabaret - NOT working
Pengo - working
Candy Cab - working. I have several PCBs I can shove in there. Right now its WW Cowboys of Moo Mesa.
Time Pilot - diagnosing. All of the parts are there. I also have spare CRTs and a known working PCB.
MAME cab - working

yotsuya:
Nice lineup man!

So, no fisticuffs with Sweet Lew? Bummer. Still, have fun!

Mike A:
My Vanguard machine works well except there was no "pew pew" sound when I hit the fire buttons.

I read through a couple of Vanguard repair logs. One of them had the exact same problem. The culprit was a burned out LM3900. I tested mine and it was toast.

I ordered up an new chip and a socket for it.

"pew pew" is back.

I am really inexperienced with desoldering. I have a cheap desoldering iron with the vacuum bulb attached. It is a chore to use.

Is that a bad tool for the job or is it just difficult to desolder 30 year old blobs?

Gilrock:
I had always used copper solder wick and its been a pain to desolder anything. So when I was going to do my recent cap kit I looked into desoldering stations. I saw a guy doing a cap kit in a video and he showed a Hakko desoldering iron that he said was awesome so I paused the video thinking I'm going to jump over to Amazon and buy one. I searched and it popped up costing $350 and I fell out of my chair. I mean I like having nice stuff but I'd need to be doing it daily to justify that price. So I found another station that was $129 on Amazon and it has worked awesome. Brand was Anesty. Suck the solder off the pads in a couple seconds and the caps would fall out or easily be pulled off the board. If I ran into stubborn spots where the old solder didn't want to melt I sometimes would add a touch of new solder which would break the ice and allow the whole ball of solder to melt. I also tried one of those flux pens but it seemed to be more trouble than just adding a bit of new solder first.

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