820-2850

[Rford]

previous issue, changed out c9560 because of an intermittent display problem. It worked before, but since I changed it out it no longer displays or backlights. I was careful with heat, and used a poly tant 330uf same size package from fast fox board. Saw display wasn't working after this, and tried another one. Obviously chances are slim that they were both bad. I did notice that the new ones said case-b2-sm1 whereas the old one didn't say sm1. It just had case-b2-sm (no "1"). Ideas? Could it be the cap I chose?

 

[Gurmon]

Anything on external display ?

 

[dukefawks]

Still chimes?

 

[Rford]

Still chimes yes

 

[Rford]

Rescind last. No chime after cap swap. Chimed prior to

 

[dukefawks]

CPU Vcore?

 

[TCRScircuit]

The cap is polarized. Make sure you put it on the right way...

 

[Rford]

PPVCORE_S0_CPU=1.07V
Finally got a little more info from customer. She said when it goes to sleep over night, in the morning, she opens it and it resets the whole system...

 

[Rford]

dukefawks sorry about the delay. in my response to your inquiry

 

[dukefawks]

Could be anything. Got 1.35/1.5V on C9560? It could be 100 other things, any knocked off resistor/ESD damage could cause this.

Also not hot air should be used in this proces, can easily be done with normal soldering iron, much safer.

 

[Rford]

Uggh any suggestion what I should tell her since it actually displayed and lit up when she gave it to me, now it doesnt even do that? I really hope I can find the cause to at least get it to display and send it back nfnf in the same condition it came to me.

 

[dukefawks]

No idea, you screwed this up for sure. Up to you if you want to make things right.