Re: Dell 2007FPb - help identify replacement diode

Hi, I also have been searching for the diodes above...

On my boards the part number is S4 78A, while on Budm's teardown post they were S4 66A.
On an eBay search for "S4 Diode" there are two part numbers that come up:

SD103AWS and 1N5819 both are 1A 40v Schottky.

Does anyone know if i can use either part or is one preferential to the other?
many thanks.

Re: Dell 2007FPB teardown

Very useful post - many thanks!

Re: Dell 2007FPb Not coming on

Thanks for that confirmation Jetadm123

Re: Dell 2007FPb Not coming on

Hi,
I should have confirmed that i am not getting any voltages out of the voltage regs; just the 19v from the power board. these are some test results I have got:

[U]USB/Power Boards[/U]

[U]Diodes[/U] (using diode test function on DMM)

FD3 0.142/0.323
FD4 0.141/0.323
FD5 0.151/1.395
FD6 0.151/1.397
FD7 0.148/0.804
FD8 0.148/0.804

Voltage Reg?

U2 no shorts between pins

Transistors? J598

Q6 no shorts
...

Re: Dell 2007FPb Not coming on

Hello there,

Firstly; what a great forum! I have a Dell 2007fpb that has exactly the same issues as this thread; so i thought it was best to continue here.
I bought a copy of a 'LCD repair' manual online and its helped me get going + the great posts here have helped immensely.
As it has been a few years since the original post, this is the issue:

[U]The Problem[/U]
The monitor when plugged in (both mains and vga input) is completely dead; no power light on the front lights up.

[U]What...