Thanks CapLeaker,
That was going to be my next move(guess), I only hesitate because I've never attempted a surface mount soldering.
I figured it would be a good time to try(learn).
bfordz
Senior Member
Last Activity: 12-02-2019, 05:44 PM
Joined: 08-10-2011
Location: G.R.,Mich
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Re: Dell F177FPE monitor, won't power on
Thanks CapLeaker,
That was going to be my next move(guess), I only hesitate because I've never attempted a surface mount soldering.
I figured it would be a good time to try(learn).
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Re: Dell F177FPE monitor, won't power on
RJ, thank you for your help and input. Also, the regulator lessons and how they function.
It also encouraged me to look a little further to learn some more besides just replacing "caps".
Capleaker, thank you for the 'snubber cap' information, I would have replaced it but then that's why I inquired here first. I actually 'thought' I had something when it tested open. Live and learn!Leave a comment:
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Re: Dell F177FPE monitor, won't power on
I included a better pic of U801 for reference.
For U851 here are the actual v readings:
1 - 12.0vdc
2 - 5.2vdc
3 - 0.0vdc
4 - 1.25vdc
5 - 0.0vdc
sorry for the delay, I was away from my computer this weekend....Leave a comment:
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Re: Dell F177FPE monitor, won't power on
Long week...E177FPf (sorry)Leave a comment:
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Re: Dell F177FPE monitor, won't power on
It is AS1117-33 can't tell if they're 1's or I's.Leave a comment:
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Re: Dell F177FPE monitor, won't power on
U801
a1
asiii7r-33
bo635 26
u802
ac 6i8l
17-18lLeave a comment:
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Re: Dell F177FPE monitor, won't power on
here's a diagram...Leave a comment:
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Re: Dell F177FPE monitor, won't power on
U802
1 - 0.0v
2 - .433v
3 - 1.25v
4 - .433
U801 (no numbers but using same as 802)
1 - 0.0v
2 - not connected
3 - 5.20v
4 - 1.25v
that's checking voltage at each terminal not across terminals.Leave a comment:
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Re: Dell F177FPE monitor, won't power on
12.07vdcLeave a comment:
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Re: Dell F177FPE monitor, won't power on
Main filter - 171.2vdc
R852 - 0.4ohmsLeave a comment:
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Re: Dell F177FPE monitor, won't power on
The fuse is good and the R852 is 0.2ohms. I'll check voltage now.Leave a comment:
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Re: Dell F177FPE monitor, won't power on
Well, that shows how much I know! Very little when it comes down to the real nitty gritty.
Most of my boards have all shown the issues, when it comes down to the actual 'what needs to be tested and the results' is where I get a bit lost.
When you say 'main filter cap' which one are you referring to?Leave a comment:
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Dell F177FPE monitor, won't power on
I've got a Dell F177FPE that went dead, it won't power on.
There's no power "on" light or anything.
I took it apart and the caps all 'look' good but they're all cheap Su'scon's or Teapo's.
While doing some basic tests of the board I found a Ceramic capacitor that shows open with the ohm meter, so I'm hoping that's the cause of my no power up problems. I included pics of the failed cap and it's location on the board.
My question / problem is I've never replaced or dealt with these type of capacitors so I want to know if I'm reading it correctly... -
Re: Samsung UN60H7150AF-has sound, no picture
Thanks again to "budm" for his advise on my T-con board being my problem.
These samsung parts seem to be in hi demand; I got on ebay and found a board from TVCHOPSHOP right here in MI., ordered and received it the next day!
I attached pics of the old board and then the new board, there are 3 LED's on the board and only one was lighting up on the old board (hint)....Leave a comment:
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Re: Samsung UN60H7150AF-has sound, no picture
Thank you very much 'budm'
Part is on order, will update with repairs!Leave a comment:
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Re: Samsung UN60H7150AF-has sound, no picture
If I reconnect all cables (main to PS board) BUT disconnect the T-con to Power supply board; the backlights come on / off with the TV.
If I turn the TV on, the backlights come on, If I turn the TV off the backlights go off.
I still can't get anything on screen; eg., on screen menu. I haven't tried an external source....Leave a comment:
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Re: Samsung UN60H7150AF-has sound, no picture
I updated my pin labeling.
NO, if I disconnect the 4 white flat cables I don't get any backlights on. TV on or off.Leave a comment:
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Samsung UN60H7150AF-has sound, no picture
We have a Samsung 60" LED flat screen that suddenly lost it's picture. We have sound but can't get a picture.
No Picture what so ever, no menu, no smart hub.
I have removed the back and I can't see any physical problems or obvious signs of a failure.
I noticed the T-con board has 3 LED's; LED-1 comes on / off with the TV being turned 'on' / 'off'. LED-2 blinks one time real fast when the TV is turned on. LED-3 has never come since I took the back off. I don't know if that helps or means anything!
After some research / reading I found... -
Re: HP L1706 black screen, powers 'on'
momaka,
Thanks for that information. I'll keep that for reference.
I've been bit by the re-cap'n bug. IF it breaks I just gotta look inside!
Since this HP monitor, I've got a Dell projector dead and an APC UPS overload
Leave a comment:
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Re: Dell 1800MP projector - bad OST Cap
this is an update to the Dell 1800mp cap replacement I did 6 years ago.
I replaced the Ost 10v-3300uF Cap with a Panasonic 10v-3300uF FM series and all went well; the projector was up and running for the last 6 yrs but now it's down again with the Panasonic cap failed.
alongside the Panasonic cap is a Ltec 25v-680uF that has failed so I'm going to replace all the caps around the 10v-3300uF so maybe we'll get a little more than 6 more yrs out of it or we've stopped using it by then.
I'm updating / adding this...Leave a comment:
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