Centipede 19" Cocktail restore...

TSB

Well-known member
Joined
Jan 14, 2016
Messages
2,541
Reaction score
916
Location
Alaska
This one was odd enough that I thought I should document it here.

Here are the before pics. Will update as I make progress!

attachment.php


attachment.php


attachment.php


attachment.php


attachment.php
 

Attachments

  • CentiORI1.jpg
    CentiORI1.jpg
    173.2 KB · Views: 500
  • CentiORI2.jpg
    CentiORI2.jpg
    165.6 KB · Views: 499
  • CentiORI3.jpg
    CentiORI3.jpg
    137.4 KB · Views: 494
  • CentiORI4.jpg
    CentiORI4.jpg
    159.8 KB · Views: 485
  • CentiORI5.jpg
    CentiORI5.jpg
    151.1 KB · Views: 489
I started breaking this down & testing the components. The power supply was in good shape, but the board wasn't working. The monitor wasn't showing a picture either.

Rom 210 was flakey, so I grabbed one from a pcb that didn't need it as much... and reprogrammed it as Centipede. Voila! A working PCB! (Pic1)

I picked the lock on the monitor access door, which is where you disconnect the monitor prior to removing it. (Pic2)

You also have to open the control panels in order to remove the monitor bolts that hide beneath. (Pic3)

.
 

Attachments

  • IMG_0147.jpg
    IMG_0147.jpg
    99.5 KB · Views: 82
  • IMG_0145.jpg
    IMG_0145.jpg
    104.2 KB · Views: 75
  • IMG_0146.jpg
    IMG_0146.jpg
    508 KB · Views: 73
Last edited:
With the monitor pulled, I could give the chassis a once-over. F901 was blown, but the HOT tested fine. I cleaned up the chassis and found the crack in the flyback that blew F901. I don't have one on hand, so I grabbed a different chassis, cleaned it up, replaced all the caps, sprayed deoxit on the pots, and did the 'curl mod'. Then adjusted it on the bench. (pic1)

I got it all back together, only to be greeted with a dead pcb again. Turns out that the repurposed Zaxxon eprom went bad almost immediately. I guess I shoulda known better. 😂
Replacing the 210 brought the board back to life, but now the pokey was misbehaving, so I replaced that too. (pic2)

Working board. Working monitor. Now I just needed to adjust the picture size. Evidently, the monitor access port doesn't give you the ability to make those adjustments...
You have to adjust the monitor while it is outside the cab, sitting on the floor next to the monitor access door, where you can plug it in through the access door. I guess that's a better solution than putting access holes on the bottom of the cab. (pics3&4)

So, the game is running like a champ now. The trackballs still need some attention, and a few cosmetic items like CPOs, endcaps for the feet, cleaned legs, and a bulb for the coin door (which I don't have because it's a "46" screw-in type that none of my other games use). I thought it was interesting that it used a green light bulb housing, instead of the black ones in my Centipede Mini. (pic5)

Pics attached:

.
 

Attachments

  • IMG_0177.jpg
    IMG_0177.jpg
    94.4 KB · Views: 73
  • IMG_0178.jpg
    IMG_0178.jpg
    88.9 KB · Views: 89
  • IMG_0179.jpg
    IMG_0179.jpg
    93.5 KB · Views: 77
  • IMG_0174.jpg
    IMG_0174.jpg
    94.4 KB · Views: 81
  • IMG_0175.jpg
    IMG_0175.jpg
    84 KB · Views: 81
Last edited:
I stayed up waaaay too late last night vectoring the CPO.
There is something incredibly satisfying about those clean lines, though...


attachment.php


attachment.php
 

Attachments

  • IMG_0456.jpg
    IMG_0456.jpg
    68.6 KB · Views: 325
  • IMG_0458.jpg
    IMG_0458.jpg
    44.2 KB · Views: 319
I stayed up waaaay too late last night vectoring the CPO.
There is something incredibly satisfying about those clean lines, though...

That's awesome, there is something calming and extremely satisfying about tracing artwork and getting it perfect. Especially on those late night marathons where you get into a rhythm and can't stop.
 
I'm going to have to research vectorizing. I (think I) know what you're doing. I can only imaging the level of effort. It is very cool.
 
Making progress on vectoring the CT glass artwork.
Mine looks great, but I want to preserve the artwork just in case the glass ever gets broken...



attachment.php
 

Attachments

  • IMG_0480.jpg
    IMG_0480.jpg
    89.9 KB · Views: 285
Last edited:
Back
Top Bottom