Centipede ARII board is fried around the R30 connector. Is it safe to salvage?

You are free to not kick the dead horse if you want, @Charles Kline. By the way, I did search this extensively, but my case was a little unique given the extent to which the R30 resistor was fried on the board. I saw a similar case, almost exact, but not nearly as much char-broiling on the PCB. That means the chances of broken traces is much higher and alters the game plan.

I've repaired AR's with R30 burned so heavily there was a dime-sized hole in the board you could put your finger through. It's common, because all of these games were neglected back in the day, and run into the ground.

Patch the hole, rebuild any damaged traces, replace the resistor. Clean your game board's edge connector, and you'll be fine.

This is a simple problem with a simple cause, and does not require modifications or redesigns to the system. Only a simple cleaning, which was never done in the first place. Do the cleaning and the issue goes away, the sense circuit runs as intended, and nothing burns up.

Anyone trying to sell you any other solution either doesn't fully understand the issue, and/or is trying to sell you something.
 
You are free to not kick the dead horse if you want, @Charles Kline. By the way, I did search this extensively, but my case was a little unique given the extent to which the R30 resistor was fried on the board. I saw a similar case, almost exact, but not nearly as much char-broiling on the PCB. That means the chances of broken traces is much higher and alters the game plan.

I guarantee you there are threads that show exactly what yours looks like. There was no reason to make a new thread. Typical noob thing I guess.
 
@Charles Kline I may be new to this forum, but how does your nitpicking contribute to the discussion? Someone else is going to search for this and have to read a bunch of obfuscatory comments about how it's been answered before. It happens with search results everywhere. The original answer gets buried beneath a hailstorm of "YoU diDn't reSearch the ProBlem!!" I did and still had more questions specific to my case. Leave it at that.
 
@Charles Kline I may be new to this forum, but how does your nitpicking contribute to the discussion? Someone else is going to search for this and have to read a bunch of obfuscatory comments about how it's been answered before. It happens with search results everywhere. The original answer gets buried beneath a hailstorm of "YoU diDn't reSearch the ProBlem!!" I did and still had more questions specific to my case. Leave it at that.
I'd suggest you use the advanced search. The regular search is pretty worthless unfortunately (at least the last time I tried it).

There are many articles about R30 going up and taking a part of the board with it, including damaging the pads.

For example:

It isn't nitpicking the discussion. There is a long argument between those who believe the original "sense circuit" which was intended to "sacrifice" a few cents in cheap resistors (provided they are elevated above the board) instead of cooking and damaging the edge connector of the main board, which is harder to fix (and in the old days, would have likely resulted in the board being scrapped.)

Then you have the "sense mod" gang here, who believe you just replace the resistors with wire, and if the edge connector cooks off, you just fix it. You also should clean the edge connector periodically, since it's "tinned" and tin corrodes resistive (which starts this whole problem in the first place.)

A more expensive solution would have been to silver plate the copper pads for the edge connector or gold plate them so they don't corrode, but Atari didn't do that.

I tend to stick with the "intent" of the original design, so I'd rather see the game fixed by replacing R30 and the other associated components, cleaning the main board edge connector, making sure the edge connector "connections" are good / tight / making good contact, and drive on.

However, it is your game. Do with it what you will, but understand this is a "Preservation" forum, so if you say you are going to mame this and put in a 60 in 1 board, expect to be flamed.

Fair enough? Welcome to the fun!

(You inadvertently stirred up the trolls defending each position, so your thread gets hijacked by those people as they ad-nauseum pose their positions (again)).
 
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