Re: Oevia 252fhd-t11 DPS-408AP B power supply
So, with new meter, you have solid 24V going to inverters? Exactly what do you read?
So, with new meter, you have solid 24V going to inverters? Exactly what do you read?
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Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search. -
Re: Oevia 252fhd-t11 DPS-408AP B power supply
Sorry for the late reply been busy. I am getting 24.4v to the inverters , VBL>4.7 ,VBRI> 3.5 and its stable, VLAMP is not used and theres no reading there.
mikeComment
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Re: Oevia 252fhd-t11 DPS-408AP B power supply
VBL = BL_ON (Backlights ON)
VBRI = Dim (Backlights dimming control)
So Inverters need to be checked.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=24809Comment
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Re: Oevia 252fhd-t11 DPS-408AP B power supply
Will check the inverters, what should i look for?
Also on the main board , It has a @ U7 is a 1084 reg, it reads pin1=1.35
pin2=2.60
pin3=5.02
is this good or bad?
MikeComment
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Re: Oevia 252fhd-t11 DPS-408AP B power supply
Can you post a picture of the inverter(s)?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Oevia 252fhd-t11 DPS-408AP B power supply
Will do in a few minsComment
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Re: Oevia 252fhd-t11 DPS-408AP B power supply
heres the invert pic'sAttached FilesComment
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Re: Oevia 252fhd-t11 DPS-408AP B power supply
There's usually a fuse on these marked "1A/76V", do you see one?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Oevia 252fhd-t11 DPS-408AP B power supply
yes , tested good, all are good on all 4 boardsComment
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Re: Oevia 252fhd-t11 DPS-408AP B power supply
Sorry, made a bad reading on the master inverter fuse, was looking at the bigger white ones. on the master with meter set to 200k, get a slow climbing reading, the others on the slave boards read good no resistance
MikeComment
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Re: Oevia 252fhd-t11 DPS-408AP B power supply
Great! The fuse is blown. It is a common fault. Replace it and it should work.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Oevia 252fhd-t11 DPS-408AP B power supply
will do and let you know
mikeComment
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Re: Oevia 252fhd-t11 DPS-408AP B power supply
That did it Tom!
Thanks for the help, I have learned alot with this one. I have done about 20 tvs so far. I have a few to get to, may be back for you guys help. Thanks again
mikeComment
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Re: Oevia 252fhd-t11 DPS-408AP B power supply
Nice one. Thanks for the feedback too.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Oevia 252fhd-t11 DPS-408AP B power supply
Glad it was an easy fix, very common failure for CMO inverter boardNever 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=24809Comment
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Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump
One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy... -
I have been working on this concept for quite some time now with limited success but recently I found a switching power supply that is setup for the voltage that this soldering station needs to operate at however it also needs part of the secondary circuit from the original switching power because you need several voltage rails
I once tried to get a ZD-915 desoldering station to work on a 18 volt battery power supply but unfortunately things did not go well but I did find a work around but I might try this idea again but going at a little differently more about this another time... -
The sub developed a constant popping every couple seconds from woofer and power LED flickering with nothing but wall AC connected. Connecting an audio cable didn't change anything. It doesn't play but a second or two of audio in between the pops.
Opened it up and discovered the power supply is making a faint clicking or ticking sound.
I measured the amp's output to the woofer and it pulses up to 50mv DC to be driver. The pulses coincide with the power supply ticking/clicking.
I measured the power supply output going to the amp board and it too has this pulsing. Voltage cycles... -
Hello Everybody,
Trying to repair a power supply from a Russound CA4 Multizone Controller (picture attached)
Russound no longer supports it but were kind enough to provide a schematic of the power supply (pdf attached).
The outputs marked 12v and 20v are all measuring only 1v.
The board is clicking, which I think means it is in something called hiccup mode when the flyback transformers switches because of an internal problem or something else on the board Overloading it.
The capacitors physically look clean (no bludgesor leaks) and...
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