Centipede restoration - My first - There will be plenty of pics

Arcade Collecting > Restorations & repair

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pbj:

--- Quote from: bperkins01 on December 21, 2019, 08:30:27 pm ---Once I got it to shape I clamped it in the vice

--- End quote ---

:banghead:

He’s just messing with us now.

bperkins01:
Down to final cleaning and reassembly

The K4600 has a metal shield that comes off real easy with 4 screws. The shield has the degaussing coil attached. Cleaner and the paint brush did a nice job. A couple of the original stickers were laying around inside the cabinet. I'm going to re-stick them later.

More cleaner and a hose.. I didn't realize it the first couple of times I moved the chassis - the oval holes on the sheet metal sides are carrying handles. Just in case this is your first time too..

Metal degaussing shield cleaned up.

The CRT is very front heavy. Clamp it to the bench - I would not consider this optional.

Like the day it was made. I spent about 15 minutes on the tube with the compressor blowing air under the yoke and down the windings to push out any remaining water. If a little dribble came out - the air would dry it.

First up was the degaussing shield and the flyback transformer.

After that I reattached the ground wire and the red wire (that was from the flyback to the neckboard.

Add the main PCB and daughter cards

This CRT is ready to get bench tested and adjusted. One thing I would do differently on the next one.

Here and there - there will be a single little wire that you pull off (like a ground line) or pop off a screw to unhook something. I took a bunch of *before* pictures but not so many afters. I spent a little extra time trying to figure out - where did this attach?

So - If you are going to pull off a specific wire - take a pic of it on and right after that show it disconnected next to where you pulled it off.. That way the pics are beside each other in your phone. (or camera? does anyone use cameras anymore?)

I found all of the right pics - but there were not next to each other and a before/after of the wire in the same spot would have helped.

Same for zip ties. Show the before and cut tie so you know where it went.. Just for the sake of completeness. On this chassis they use a couple of ties just to hold boards in place.

More to come..

Arroyo:
Well thanks a lot, after seeing these pics, I feel like I gotta take apart all my machines and clean em. :lol. Looks great, nice work.

opt2not:

--- Quote from: bperkins01 on December 22, 2019, 08:37:08 am ---Here and there - there will be a single little wire that you pull off (like a ground line) or pop off a screw to unhook something. I took a bunch of *before* pictures but not so many afters. I spent a little extra time trying to figure out - where did this attach?

So - If you are going to pull off a specific wire - take a pic of it on and right after that show it disconnected next to where you pulled it off.. That way the pics are beside each other in your phone. (or camera? does anyone use cameras anymore?)

I found all of the right pics - but there were not next to each other and a before/after of the wire in the same spot would have helped.

--- End quote ---

You can also refer to the manual to figure out what wires go where, in case you forget or didn’t take pics.
https://www.arcade-museum.com/manuals-monitors/Wells%20Gardner%2019K4601%20service%20manual.pdf

But really, you should be referring to the manual anyway if you’re working on monitor repair in general.

Also, here’s the troubleshooting flowchart, these come in handy when trying to figure out repairs:
http://www.wwyss.ch/Arcades_Manuals/Manuals/Monitors/FLOWCHART_-_WELLS_GARDNER_K4600_(U).pdf

Highly recommended reading when tackling monitor repair. :cheers:

bperkins01:
Thanks opt2not

I had the service manual - but not the flow chart.

The manual shows the schematic - but not where the stupid ground wire screwed in originally. I could have put it anywhere of course.. But I wanted it back in its original spot. I found it eventually in one of the pics I had.
Either way - it wasn't a big deal. But thanks for the info!
The flow chart will come in handy for sure.

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