820-00426 has Green Light that turns Orange But no Fan Spin Not turning on.

peeka79

Member
When I measure in This mode Diode Mode using Manual Setting it shows Ohms logo and with red probe on Ground and Black Probe on PPBUS_G3H I get OL reading...Does that seem Correct?
 

2informaticos

Administrator
Staff member
Try other DMM.
You must get aprox 500 there, when F7140 removed.
On L7130 should get aprox 120-450, depending of Q7135 type.
 

2informaticos

Administrator
Staff member
No need to remove.
I said that just in case you already remove it.

I still wait your comment AFTER changing Q7180.
Maybe PPBUS_G3H will come back then...
 

peeka79

Member
Hi 2informaticos Thank You So Much Again for your Help!!!... I can?t seem to locate Q7180 on this 820-00426 board as the Boardview layout is slightly different on the 820-00138...So Frustrating...Do you know where I can get a 829-00426 Boardview? Some items are in the same location on the 2 But not the Q7180...Or can you tell me where in the board Q7180 might be...Sorry for the inconvenience...Thank You
 

2informaticos

Administrator
Staff member
No boardview needed!
As per schematic, Q7180 is the only dual MOSFET (metal case) connected with F7005; and obviously with J7000.
Just follow the trace from power connector (with buzzer)...
 

peeka79

Member
Thank You 2informaticos....Here are a couple of Photos of my 820-00426 Board...Where Q7180 (Dual Mosfet with Metal case) is Located on 820-00138, 820-3662...etc My Biard has 2 Black Seperate chips in that location...Since I Have no Schematic or Boardview for the 820-00426 I can only go by the 820-00138 that I Have and they are clearly different...Are one of the 2 Black chips in the Photo Q7180?
 

peeka79

Member
The top board in the photo is the 820-00426 and the bottom board is the 820-00138...As you can see the area is different...
 

2informaticos

Administrator
Staff member
Your board could have two separated MOSFETs for this job.
Check if one beeps with power connector (PPDCIN_G3H) and the other one beeps with U7100 (pins 27/28).
The nearest big black resistor is probably R7120...
 

peeka79

Member
Sorry I?m just confused as to what you mean by ?Check if one beeps with Power Connector (PPDCIN_G3H)? sorry I?m still learning...lol...Thank You for your Patience it must be annoying for you.
 

peeka79

Member
I also checked C7185 and R7186 (PPDCIN_G3H) with DMM in Manual OHms mode and I Get OL on pins 1 of both with No Beeps?...Does that Help?
 

2informaticos

Administrator
Staff member
Can you post voltage on the both black MOSFETs?
Specify voltage for pins.
Looking at schematic, Q7180 is "built" in your case with these two MOSFETs.
Cannot be such difficult to imagine what you need to do.
Probably one of them is bad; change both if you don't know how to test.
I hope you can solder proper ones instead...
 

peeka79

Member
Where the Heck am I going to find those 2 Mosfets!!!...lol...I have PLENTY of Metal Cased Q7180s....It?s the 1st Board I?ve seen like this...All of the 820-3332s, 3662s...00138s...etc All have the Metal cased One...GO FIGURE
 
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