i have an hp f2105 lcd monitor that has a black screen. the power indicator light comes on blue and stays on but the screen is black. i tried shinning a light on the screen to see if maybe it was the backlights that went out, but i dont see anything. this happened after the power went out, however my father said the ups backup came on but the monitor had shut off and was never able to get it to come back on. any ideas?? Also i removed the back cover and took some pics of the boards. i did notice quite a few capacitors that are bulged ontop. pls advise if i should replace these. the pics are below. thank you
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Re: hp f2105 monitor black screen
Digikey.com good capacitors to use
Nichicon : PM , PW , HE , HD , HV , HM , HN , HZ
http://www.nichicon.co.jp
United Chemicon : LXZ , KY , KZE , KZH , KZG not recommended due to more fails, KZJ
http://www.chemi-con.com/
Rubycon : YXG , YXH , ZT , ZL , ZLH , ZLG , MBZ , MCZ
http://www.rubycon.com/
Series Chart, List of Substitutes for Old Series
Sanyo : WX , WG
http://www.sanyo.com/components/
Panasonic : FC , FM
FM is sometimes cheaper than FC and better. Both are great though.
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Re: hp f2105 monitor black screen
BEL FUSE MS Series SLO-BLO 5A:
https://www.digikey.com/product-deta...1036-ND/614968Attached FilesNever stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Re: hp f2105 monitor black screen
i got the new inverter board installed and now the power light wont come on at all. i checked the led itself and its good. but when i press the button, nothing happens. i checked the main fuse that is next to the power plugin and its good. i also checked the 2 smaller fuses on the power supply board (f851 & f852) and they are good as well.
attached is a pic of the power supply board with the fuses circled in different colors
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Re: hp f2105 monitor black screen
What DC Voltage do you get by measuring between the two legs of that main filter cap (the big 450VDC cap laying on its side) in the hot side of the circuit?
It sounds like your NEW power supply board is dead or the cables are not connected back in place correctly. It is easy enough to put the old power supply board back in place and see if you can get the LED to come on.Last edited by budm; 01-12-2018, 09:24 PM.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Re: hp f2105 monitor black screen
Sorry, I got confused. Can we see the straight shot pictures of all the boards, and pictures of how all the boards are connected together?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Re: hp f2105 monitor black screen
Wow, I just realized that I got rid one of these two monitors I have!Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
Comment
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Re: hp f2105 monitor black screen
If you disconnect the cable to the inverter board, will you get your power LED back on?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
Comment
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Re: hp f2105 monitor black screen
How far are you from Novato?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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