Help! Needs A500 repair tips

[darkcoder]

Hello!

 yesterday I switched on my beloved A500 (my very first Amiga,
bought in 1988) and... she didn't wake up!! :-(
Last time I switched she on was almost 1 year ago,and worked
perfectly. During that time she has been in a safe place, no hurts, no dust. Maybe too much heat in june??

Anyway, situation is: when switch on, the caps lock light blinks, and I can hear the drive motor turning on. But the power led does not turn on, blank screen and no more sounds from the drive (no clicks). Pressing the caps lock turns on/off the caps lock led. That's it.

How do you suggest proceeding to try a repairing?

regards

[darkcoder]

thanks all for suggestion. the battery is ok, I removed the memory expansion (a fresh one bought last year from Vesalia) and same results.
I tryied to switch it on with a disk inside, apart from the brief noise of the motor being switched on, it does not try to boot from disk.
I will try to open and reseat chips. It's something I never done before. Some suggestion on which chip to start with?