I've looked into this a little and after trying a few things, I thought I would open this up to the experts.

Originally my chase lights were very slow. They all worked but didn’t blink as fast as they should. I had the two light boards and chase driver board checked out by a great tech and they have been fixed so now, if i boot up my Whitewater after not being on for some time, the chase lights on the topper will work perfectly BUT then eventually slow down about 10 minutes of being on. When the power is first put on, not all of the lights will light up (some are off). After full boot up all the lights turn on and begin to flicker. Then the slowness begins about 10 min in.

My power driver board is original so no concern about the RD transistor issue. I checked both plugs on the power drive board and I don’t see any issues. My gut is that it’s something to do now with the power driver board. I did change the light boards around and I get the same slow pattern. Chase light driver board has both red LEDs on.

Any thoughts on next steps? Here is what it looks like:

Doesn't work (slow blinking):

Works:

Good catch- the last lamp was recently fixed so all 16 now work.

Thanks for the suggestion. Are you talking about the actual chase driver board (little one)? If so, I did have that checked out by the tech and corrected.....do you think maybe there is still an issue?

Yes original. I believe the technician socketed so I just need to find the relevant parts to buy. Do you have the link or name of the items?

Yeah I was thinking it could be the pdb or Chase board. Just curious what would be the parts I need for either SOL on the pdb and the chase board? The chase board night be easiest since it's been socketed. I rather have all the parts rest to go.

Thanks

Awesome thanks!

EDIT - parts ordered. Will report back.

update - I installed a new LM339 chip and now the lights are all blinking but it looks like the wrong pattern b/c it doesn't give me the effect as before. I will say the lights are blinking better though. See below. I bought the other items as well so I guess I can try those next but FYI in the event that helps clarify what the problem is...it's almost if I can just change the blinking pattern - not the frequency of the blinking as that seems to be fixed now.

Update - I bought a brand new chase board. Same issue! I tested the transistors power and I believe they are working as expected. Could it be the lamp boards the lights are plugged into? Maybe the cables? Should I change the transistors on the board anyway?

yep - the 194.

Previous owner put in LEDs - could that have damaged the lamp boards themselves? I'm just trying to figure out what is causing this b/c it works perfectly and then 10 min later it slows down. It's like something is getting hot and then faulting?

well here is the latest - lamps seem to flash faster but it's the wrong pattern....haha. I guess power board....

I bought a brand new chase board from marco. I wouldn't think GLM's would change this - I was thinking power driver board (although transistors noted in this thread appeared to read OK).

Great suggestion. I forgot about that. Just did the swap and sure enough the topper is perfect. It's def the power board. I will have that repaired but for the time being is it ok to play white water with the getaway per board?

Edit looks like they are

So it's fixed.... Finally. Had to go with the professionals on this one but appreciate all the help here!

Problem was Q21 and Q22 for those who might see this in the future and have the same issue.

All good. Perfect Wh20!