A1466 820-00165

Instafixx

Member
For my reference : PT

Machine has green light only.
PPBUS at 8.18V

C2952 Corroded.
Removed. PP3v3_S4 is still shorted. Diode to Ground - 0.002

Checked all the Big Coils - L7560 Diode to ground 0.042.

Inject Voltage at Pp3v3_s4?
 

Instafixx

Member
I injected Voltage - one cap was hot. Removed.
Line still shorted. Voltage is 0.4v
Nothing gets hot anymore at 1V.

I get Orange Light now and PPBUS is at 8.6V

Update : Now I am getting 2V at 3v3_S4 with Diode Mode Reading 0.009. Strange
 
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Instafixx

Member
Which coil?

L7560? I get 3.3v on both sides.

Removed L7560 . Low Value on Pin 2. Injected Voltage nothing getting hot.

Injected Voltage at PP3v3_S5 . Nothing got hot.

What am I missing ?
 
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2informaticos

Administrator
Staff member
Sorry, I got confused with S5, instead of S4.

Try injecting voltage at 3V3_S4.
With 0.009 diode mode reading, an IR camera should find something interesting.
 

Instafixx

Member
Pp1v05_s0
Diode reading is .198.

I get Ppbus/ 3v42

Ppbus 8.59v
3v42 3.4V
3v3 _s5 3.3v
5v_ S3 0v
 
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