Re: two Dell 172FPb both have TWO SECONDS TO BLACK
What size picofuse are on these boards? like to make a oder for them but don`t know witch one`s Iam looking for.
Mad al
New Member
Last Activity: 04-24-2014, 07:44 AM
Joined: 03-13-2012
Location: Brisbane
-
Re: two Dell 172FPb both have TWO SECONDS TO BLACK
retiredcaps yes sorry I was useing 200 ohms.
Yes it be the infamous Benq boards,
Same as the Attached Thumbnails budm just posted.
budm the fuse PF751 are 0.6 ohm reading at 200 ohm on both boards.
The transistor Q743 & Q751 are reading :B+C=1 . , B+E=1 . , C+E=1 . : on both boards, So there ok.
Reading the caps at 200 ohm is showing no shorts, If thats right ?...Leave a comment:
-
Re: Dell 2005FPW with Two Seconds to Black
3 transformers glue have changed color due to the heat.T301,T302,T303,
I do not know where to get replacemets transformers from (IT20. 1 NY0541BC) ?Leave a comment:
-
two Dell 172FPb both have TWO SECONDS TO BLACK
I have two Dell 172FPb both have TWO SECONDS TO BLACK.
Board 1 the power light stays on.
Board 2 the power light flashes.
I jump stat to checking the C5707 Transistors to see if any are Shorted.
Haveing the Digital Multimeter on 200 and doing a reading from the solder side
The transistors C5707 pins are mark on the board as B,C,E,
Board 1:TWO SECONDS TO BLACK the power light stays on,
transistor Q760:B+C= 01.8, B+E=130.8, C+E=129.5:
transistor Q759:B+C= 02.1, B+E=130.7, C+E=128.7:
transistor Q740:B+C=1 . , B+E=1 . , C+E=137.8:...Last edited by Mad al; 03-16-2012, 10:19 PM. -
Re: Dell 2005FPW with Two Seconds to Black
Haveing the Digital Multimeter on 2k and doing a reading from the solder side
The transformers have 2 x 6 pins and I have numberd them as below.
. .
1 2
. . . . . .
3 4 5 6 7 8
Transformer T301
A) black probe on pin 1, red on pin 2 = 1.
b) black probe on pin 1, red on pin 3 = .963
c) black probe on pin 1, red on pin 4 = 1.
d) black probe on pin 1, red on pin 5 = 1.
e) black probe on pin 1, red on pin 6 = .964...Leave a comment:
-
Re: Dell 2005FPW with Two Seconds to Black
Yes I do, It`s not a Fluke but it do the job.
jayoung Thank you for the link.
The Transformer has 2 by 6 pins I can only get readings from the side with 6 pins.
Doing a reading on all the transformer I get the same readings
1-2 .6, 1-3 NO reading, 1-4 .8, 1-5 .7, 1-6 NO reading,
Looking at the board there is brunt mark under Transformer at T303.
Looks like 1 is brunt and 2 have had heated up.
I am haveing problems uploading the pic, will repost later tonight...Leave a comment:
-
Dell 2005FPW with Two Seconds to Black
Hello
I have a Dell 2005 FPW with solid power lights the Two Seconds to Black'
I think is the general term,
I have taken the model apart I can see on the power board there is a thing at T303 is brunt out.
What is it? Will replaing this thing fix the Two Seconds to Black ?
I know the caps may need replaceing even tho the caps look good.
The brunt out part has ( IT20. 1 NY0541BC ) on top of it.
Broard is a Dell 2005fpw inverter and power board YUYANG YP20106D REV 1.1...
No activity results to display
Leave a comment: