00165 Issue

Rford

New member
So I have a problem with a 00165 no display/bklt

Indeed no display...
Indeed no bklt...
CPU is warm
The following will be obvious if there is fan and there is warmth on CPU
BUT:
PPBUS-Fine
PPBUS S5 HS Comp-8.57v
PPDCIN G3H-20.35v
PP3V42 G3H-3.42
pp5vs5-s5.13v
pp5v-s0-5.13
pp3v3 s5-s0: 3.3v
LP8550- New (last ditch effort)
0 volts all up J8300
Any ideas?
 

2informaticos

Administrator
Staff member
So missing backlight and no image for sure too?
Check first if board properly boots at least.
Do you get chime?
Confirm USB activity; use OSX pendrive with LED link, is better test.
Check J8300 voltage at pins 14, 15, 16, 18/19.
 

Rford

New member
Missing BKLT and IMAGE- Affirmative
No chime
Yes USB Activity
0 volts anywhere on J8300.
No external display either.
 

2informaticos

Administrator
Staff member
Check J8300 voltage in the first few seconds when board starts.
Pins 18/19 should get voltage even without LCD connected, at least 2-3s when boots...
 

2informaticos

Administrator
Staff member
Any history available?
Someone else worked on it before?
Disconnect LCD and try external video.
Be sure there is USB activity.
Chime should come on too; try PRAM reset.
 
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