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When looking for pdf datasheets it's handy to just type the first number or top number and type PDF after on google usually will pull up a result if not you might have to contact manufacture but here it is found it for you
Do you know the manufacture because if you do I don't contact them directly and they could print one out or email one, I will keep looking for you though I'm sure I can find it somewhere I know how frustrating it can be I will try a search to try to find out who is the manufacture if u can't find a actual datasheet I will go all the way to UT this time instead of believing in the description that there is one hope u can help you
Here is another link to a bunch of that kind after you scroll down and click on the one that says dip 28 it may not be there but figured I would give you something while waiting on your response does it say any other numbers on it other than that a flashlight works better to read small numbers than a magnifying glass I just wanted to wait on your response before proceding with last resorts tomorrow any other info as far as brand name any other numbers or letters will help if you just need to know ground and power though if you still have the circuit board it came from you could possibly trace the lines hopefully we will find the datasheet or the manufacture before it gets to that luckily there's only a couple of manufactures that make that kind of IC probably just outdated but we will get it one way or another
It's one of the directional controls that's failing.
When the contacts close it doesn't trip and stop, it just continues on in that direction.
I've traced that lead back into that chip.
I pulled the relay and it is functioning properly.
I pulled the other remaining relays and they both work fine.
There is a light on the board and from what I have read 5 blinking lights indicates a faulty relay but the relays are good so it must be something else.
If you follow the white dots you can see the trace from the brown wire ends up in the chip via one resistor.
The resistor is fine Ian.
I gave the board a thorough cleaning and it's now working.
I tried it a few times without failure and will continue to test it.
As of right now it appears to be working.
Thanks for your assistance, I'll keep you informed of the results.
Still failing but intermittent.
When it moves to the left towards the brown wire which appears red in the picture it should stop and reverse like it does but when it fails the contacts close but the relay doesn't switch and reverse to make it move to the right.