540c not sleeping right

[MultiFinder]

Sometimes when I close the lid of my 540c, it will fall right asleep. A vast majority of the time, I either need to practically slam it down to make it sleep, or just choose Sleep from the Special menu. Any ideas what's causing its seeming insomnia?

 

[mmu_man]

The lid switch might have oxidized or dirty contacts...

If you manage to sleep it sometimes by slapping it it means shaking = forcing contacts works.

 

[wally]

If you remove the right hand battery and peek in with a flashlight, you can see a tiny bat-handled microswitch directly under the latch slot that senses when you have fully closed the cover. Slamming the cover, or better just pressing more firmly further compresses the rubber bumpers to the left and right of the latch mechanism and allow the latch to penetrate a bit further to actuate the microswitch. First check to see that both top cover bumpers are fully inserted in their niches and that the latch extends about .300 inches from the sloped cover face. The latch foot should be a smooth J curved shape, not flattened or fractured/foreshortened. Check that the microswitch is mounted flush to its PC board, that the top corner almost touches the palm rest underside rib, and that the carrier board triangular section towards the upper rear is screwed firmly to the plastic mount area near the trackpad. If the microswitch works but the mechanical tolerances are marginal for trip, you can fudge things a bit by resoldering the switch to stand a little taller. Fortunately you can see the action with the battery removed, and shim the penetration to determine how much more you need or if a new switch is needed. It could also be an electrical intermittent, but start by seeing if the switch reliably sleeps the machine if you trip it mechanically by reaching into the open right battery bay.

 

[MultiFinder]

Well, after poking at it a bit with a pen through the battery bay, it seems to be working reliably for now. Maybe I just need to do this every once in awhile

Thanks a bundle for your help.

 

[evitkus]

I had same problem. I fix it now. Thank you - wally

 

[navigrassor]

A year ago pen helped me too lol