Hi all,
This is off topic but I know there are a few people here that may be able to help. Please forgive.
I've got a Roomba model 531 and it's stopped working. Completely dead and unresponsive. No light around the start button when it's docked on the charger or when it's pushed to start it cleaning. The charger led light turns on green when the Roomba is placed on it.
I thought it was a bad battery so I bought and installed a new one and still the little guy won't wake up.
Any ideas or am I SOL.
Asked
— Edited
Try plugging the charger directly into the side of Roomba.
Attached is a response of a similar problem. It said there is charging circuit safety that some times burns out.
Robot-Doc can tell more.
Help link
I have all the wheel and brush units pulled out. Does this matter? Do they have to be installed for the charging pulse to start?
Any other ideas? if not is there any place that repairs these little guys or is it even worth it?
Has the power supply output voltage (22.5 vdc) been verified with your volt meter ?
When plugged into the side of the Roomba do any LEDs turn on at all ?
Remove the battery and then plug the PSU into the side of your Roomba, any LEDs light up ?
With the PSU plugged into the side of Roomba I'm getting 22.5 at J3 where it's attached to the board.
No light at all when I plug in the PSU, not even a flicker. Same with the battery out of the unit. No lights.
I didn't know there were so many replacement board for sale though. Looks like a easy replacement process. However I'm a little confused on which board to get. I found a board that says:
"New 630 PCB Circuit Board Fits 510 thru 540 & 585. 620 & 630 REV 8"
630 PCB Riv 8
Then there's a basic 530 that says:
"Roomba 530 Main PCB circuit mother board NEW - 530 510"
530 PCB
Is there really any difference and which would you suggest? Would the newer ver board be a better choice?
One other point, there was no major firmware change in the 600 models so you wouldn't gain any new or better features or functions with a 600 board even if it did fit.
Thanks again!
Take a peek at this Dirt Dog hunting turkeys.
Bret
The replacement of the CPU board is super easy. It cost me about $75 when all was said and done.
If it's just the resistor that's bad then the little guy is surface mounted. I thought it would be a real bugger to replace it but after watching a few Youtube vids it doesn't look too bad. The link provided earlier in this thread gives a few resources of where to buy a new resistor and what to get.
Here's a good vid on working with Surface mounted soldering: