I've got an 8921 (analog cellular and lmr) that had similar issues. I noticed it began to take longer to start. Push the switch and nothing happens for a while, then it started up and ran fine. It got so it would take 5 min or so before anything happened. ?I pulled the supply out and replaced all the electrolytics. ?That was my issue.
If you ordered caps from Digikey or some other major distributor - can you share part numbers you ordered from order history? It would be great help to anyone who try to find a set of right caps for their dying 892x.
