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Equipment Repairs => Lcd monitors and laptops repairs => Topic started by: E Parton on December 20, 2011,08:55:43

Title: Desperately needed schematic Dell monitor E153 FPf
Post by: E Parton on December 20, 2011,08:55:43

Can anyone help me here ?
I desperately need a shematic for this one ..having ordered parts from China ..
PSU blow up ..
Replaced switch mode chip ...power fet ...series low Res 1W 0.39R ....optocoupler ....elec cap primary ....
Also replaced double diode on secondary ..
The monitor still wont start ..but I suspect a few surface mount resistors in the primary ..
I need a schematic so I can find their corret values ...difficult to read the devices themselves ..as they appear to be discoloured..
I'd hate to give up now that I've spent on components from China ..
Anyone ??
rgds
Evan

Title: Re: Desperately needed schematic Dell monitor E153 FPf
Post by: AGC on December 20, 2011,11:52:36

Hi
Service manual Dell E153FPf.
 http://www.4shared.com/office/q6ABugYv/dell_e153fpc_15inch_sm_ET.html

Title: Re: Desperately needed schematic Dell monitor E153 FPf
Post by: E Parton on December 20, 2011,12:51:09

Thanks AGC ...
I've downloaded the pdf ..
Its a close match ..but not the same ..
cct ref of the components on the pdf all begin 9XX ...whereas mine are 8XX ...
The components /resistors are fairly different ...
one resistor in question is labelled with value NO ...instead of a resistance value ...so isn't of any help identifying values..
I'm guessing that this is because its for a Dell E153fpc ...whereas mine is a Dell E153fpf.
appreciated though ...but still need to identify resistors ..and sadly the fpc version isn't helpful in this regard.
cheers
Evan

Title: Re: Desperately needed schematic Dell monitor E153 FPf
Post by: E Parton on December 21, 2011,16:17:23

Well friends this is my last attempt at getting the information I need to fix this monitor ...as the schematic for the fpf double sided print surface mount component version doesn't seem to exist..
I have a theory on this..
Since the later boards went double sided print ..and high density surface mount components ..I'm assuming the chinese manufacturer ..considers the whole board now a single component ..and thus not serviceable..
Absolute crap of course ..
They just dont_want_ it fixed ..
I'm uploading 3 successively closer pictures of the mostly repaired board ..the power fet ..switch mode chip ..opto and various other bits have already been replaced by me ..
BUT ..I cannot decipher the values written on the 2 resistors ringed in yellow
They are both o/c with burnt tracks lengthways across the letters and numbers ..
Particularly R861 wich I think starts 47 but the last number I cannot make out ..
Also R856 which might possibly be 15R0 ..but not sure ..
So ..I'm hoping some kind soul out there has the same monitor ..and would be kind enough to open it and read these resistor values for me ..
No need to meter them ..just tell me exactly whats written on them..?

Please...help me ..and stop the Chinese junk peddlers win yet another round.
rgds
Evan

Title: Re: Desperately needed schematic Dell monitor E153 FPf
Post by: E Parton on December 23, 2011,12:05:04

..Job done ..
monitor going home tomorrow ..following an overnight soak test.
The 2 resistors in question ..are 15 ohms (connected to FET gate) and 47 ohms ...connected to ic pin 6

rgds
Evan

Title: Re: Desperately needed schematic Dell monitor E153 FPf
Post by: haree on April 19, 2012,13:51:52

Well dude, one of mine friend have this and he told me that he want to sale it out. So i'll consult it with him the tell you the positive output what he did say..

Well price and each and every thing I'll send you in pm.
Best regard:

Koozies (http://www.getkoozies.com/foldable-koozies/)