Atari Centipede Cocktail table game has no power

Arcade Collecting > Restorations & repair

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bperkins01:
Its the very first step in the chart.. test the horizontal output transistor. It is the most likely part to have failed (X01)
Did you check it?

I would check/replace that before doing all that other stuff. Its the hardest working part on the board..

The flow chart is for troubleshooting symptoms - the flow chart you are asking for is the schematic.. You have that. Its just knowing how to read it (not always the simplest thing)
If the game is not active - you may need to wait until you can see whats actually happening..
If the red LED is on - they you may have a board problem. But hard to tell w/o a screen to help you.

Check that transistor first before spending money on a flyback.. A capkit isn't (likey) going to stop fuses from blowing .. it will help fix distortion and wavy screens.

jennifer:
That flyback has shot voltage and welded parts around it, To not order one is an experiment in futility, the H/output should be replaced regardless, however, that chassis has seen high voltage, where it dont belong, so theory would dictate H/out got damaged also, And only a fool wouldn't put new caps on it...Be cautious working on it, that thing could bite you hard without warning.

bperkins01:

--- Quote from: jennifer on March 10, 2020, 10:20:08 am ---That flyback has shot voltage and welded parts around it, To not order one is an experiment in futility, the H/output should be replaced regardless, however, that chassis has seen high voltage, where it dont belong, so theory would dictate H/out got damaged also, And only a fool wouldn't put new caps on it...Be cautious working on it, that thing could bite you hard without warning.

--- End quote ---

Did I miss that picture? I hadn't seen a fried flyback.. If the caps are original, I'd replace them.. but not before knowing what's blowing the fuse. Horizontal output transistor check is step1.

http://www.pinrepair.com/g07/ - this looked good too as a reference

jennifer:

--- Quote from: vapuser on February 14, 2020, 07:11:01 am ---This pic is showing what appears to be a bad part.

--- End quote ---
That's bad flyback if I ever saw one, tried to tell him all the way back at the beginning of this thread...But it really dont matter much anymore I supose, also said "Dont hook up that board till the end,and your voltages check out" and now it is apparently not working anymore, probibally fried it from the description....But I got to say B/perk, that was a nice entry level write up on board repair you did, Just saying ::).

bperkins01:

--- Quote from: jennifer on March 10, 2020, 12:06:07 pm ---
--- Quote from: vapuser on February 14, 2020, 07:11:01 am ---This pic is showing what appears to be a bad part.

--- End quote ---
That's bad flyback if I ever saw one, tried to tell him all the way back at the beginning of this thread...But it really dont matter much anymore I supose, also said "Dont hook up that board till the end,and your voltages check out" and now it is apparently not working anymore, probibally fried it from the description....But I got to say B/perk, that was a nice entry level write up on board repair you did, Just saying ::).

--- End quote ---

Thanks Jennifer - that pic you referred to is of a small transformer/coil (which from the original angle looked like a chip... it was not of course).. I didn't see a pic of the flyback in this thread.
The Horizontal output transistor should be easy to get to and test..

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