Keenetic 1 repair

[u666sa]

1. Pull off caps, checked with ESR meter, replaced a few just in case.
2. Did CPU reball. (after reball, by hand, no stencil, BGA289 0.45 balls, 0.78 pitch... Anyway, after reball it did turn on once. Me happy ran to computer to flash some DD-WRT firmware onto it, but it did not fire back up)

No clock signal 

I have another working router, swapped 40 mhz clock crystal from none working to working router, crystal is okey. I do get 40 Mhz clock on working router.

On this dead one, there is no clock.

What is reponsible for oscillating the crystal? Am I suppose to get voltage on it? Which way do I look into? Flash firmware chip or order new CPU? CPU is Ralink RT3052F


I know this thing is old, and it's one of those cases throw it out and buy new one, but I'd really like to get this puppy working, as long as it's cheap. Because new router is about 20 dollars.

[liaifat85]

Without any schematics, actually, it is quite difficult to figure out the problem. See if any part is getting hot after powering the board up. All perform a continuity test to find out if a short circuit has occurred somewhere.