Re: Dell 2407WFPb Monitor - Bad Cap
Yep, most of them are usually blown, mine had some other parts blown too (post #254) like Q654 and the diode you mention was ok (ZD601 15V 0.5W)
Basically everyone should check ALL the different parts mentioned on this thread.
Oh BTW, I'm using a 120uF/400V Nichicon capacitor, didn't find anywhere a 120uF/450v.
Almost two months !...
elvena
Member
Last Activity: 09-21-2012, 04:18 PM
Joined: 07-30-2012
Location: Capital
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Re: Dell 2407WFPb Monitor - Bad Cap
Thanks!
R669 is 102 (1000 ohm)
R670 is 0.22 ohm...Leave a comment:
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Re: Dell 2407WFPb Monitor - Bad Cap
FIXED!
After changing F601, C605, Q651 and R670 on powering on got Q651 + R670 + IC651 (!!
) + SMD resistor R669 shorted/blown, the fuse survived to my surprise. (Taking photos of the entire board saved me, that way I figured out the R669 value)
Then, I removed again the broken parts, changed Q654 as I detected that it was bad (Suggested on this thread), and added a new R670 + Q651 + R669 , result: Q651 + R670 + F601 dead instantly. Good thing I didn't added a fresh IC651 !
3th try: I changed...Leave a comment:
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Re: Extending capacitor leads?
That is extremely useful mariushm, thanks!.. Will call those guys to check if they have/can get the same capacitor.
selldoor, will get that pic soon!
thanks both
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Re: Extending capacitor leads?
Thanks for the answers, I won't be extending them.
The capacitor is 450V 120uF 105c - I've looked on stores here (Buenos aires @ Argentina) and didn't find any exact one - the one I bought (snap-in that doesn't fit) is 450V 150uF which appears to do the job just fine in my testing.Leave a comment:
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Re: Extending capacitor leads?
Unfortunately I'm having a hard time to find out the correct size capacitor for the power supply of a LCD.
Yep, 8-9 inches is where I have space to attach it inside the LCD.Leave a comment:
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Extending capacitor leads?
Is it correct to do? if not, why not?
If it is ok, how long ? 20-25cm sounds excessive ?
Thanks in advance! -
Re: Dell 2407WFPb Monitor - Bad Cap
R674 is not the clearest to read, but mine seems to be 8251 and the multimeter confirms with a ~8.1k...Leave a comment:
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NCP1200 PWM chip
Used in many power supplies, my question is really simple, I've seen somewhere in these forums that two of these chips are fully swappable between their versions (Specifically when talking of a dell monitor power supply 2405 and 2407WFPb)
I'm unable to know this (Due to my knowledge) but as far I can tell, they are not.
To the question, are these chips:
[url]http://www.alldatasheet.com/datasheet-pdf/pdf/84616/ONSEMI/NCP1200AD60R2.html[/url]
-- AND / OR --
[url]http://www.alldatasheet.com/datasheet-pdf/pdf/84617/ONSEMI/NCP1200AD60R2G.html[/url]... -
Re: Dell 2407WFPb Monitor - Bad Cap
Well, after replacing the mentioned parts, IC651 blew off and R669 too.
The new mosfet also died (Q651) - Q601 still good.
Hard to find the IC651 (L6561D) over here so.... I'll post back when I get my hands at one of them.Leave a comment:
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Re: Dell 2407WFPb Monitor - Bad Cap
How did it go?
I'm having the same issues other people experienced, in my case, I was using the monitor and I just heard a POP, monitor dead, UPS fuse dead.
For the moment the casualties on my monitor are:
1) F601 - T4AH 250v
2) C605 - elite 120uf 450v 105c
3) Q651 - replacing with STP10NK60ZFP
Original sheet: [url]http://www.alldatasheet.com/datasheet-pdf/pdf/209730/FUJI/2SK3502-01MR.html[/url] no?
4) R670 - 0.22 ohm -- visible burnt
The rest in the area seems ok, not...Leave a comment:
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