Hi there ..I do hope someone on here can help ..
I've searched all over the internet for a schematic for this Chinese manufactured Dell monitor ..and totally drew a blank ..
The set is fitted with a single double sided pcb ..which holds invertor and psu etc..
The psu is blown in so far as :-
Dead Power FET AS27611
SWPSU chip SG6841S
Optocoupler 817C
Capacitor C857 10uf
0.39ohm resistor R859
Primary of psu
Also replaced
Double diode on secondary s/c D854
All have been replaced ..but I'm stuck as 2 resistors in the primary are burnt open circuit..but cannot read them (idents destroyed) which is why I needed a schematic
It doesn't appear to exist in the public domain ..
The 2 resistors are surface mounts ..and one (R856) is connected between pin 8 of the SG6841S and the gate of the power fet
The other presumably feedback (R861) is connected to the FET drain and the other end to pin 6 of the FET ..
After doing this much work on it ..it would be a pity to have to give up because I can't identify 2 surface mounted resistors..
Can anyone help me ?
I've attached three photos increasing in detail ..the last shows the 2 resistors ringed in yellow ...all faulty components but these have been replaced already..
rgds
Vipersan
Uk
I've searched all over the internet for a schematic for this Chinese manufactured Dell monitor ..and totally drew a blank ..
The set is fitted with a single double sided pcb ..which holds invertor and psu etc..
The psu is blown in so far as :-
Dead Power FET AS27611
SWPSU chip SG6841S
Optocoupler 817C
Capacitor C857 10uf
0.39ohm resistor R859
Primary of psu
Also replaced
Double diode on secondary s/c D854
All have been replaced ..but I'm stuck as 2 resistors in the primary are burnt open circuit..but cannot read them (idents destroyed) which is why I needed a schematic
It doesn't appear to exist in the public domain ..
The 2 resistors are surface mounts ..and one (R856) is connected between pin 8 of the SG6841S and the gate of the power fet
The other presumably feedback (R861) is connected to the FET drain and the other end to pin 6 of the FET ..
After doing this much work on it ..it would be a pity to have to give up because I can't identify 2 surface mounted resistors..
Can anyone help me ?
I've attached three photos increasing in detail ..the last shows the 2 resistors ringed in yellow ...all faulty components but these have been replaced already..
rgds
Vipersan
Uk
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