Re: insignia. no picture/back light
I see 16 3-pin MOSFETs on the board.
http://assets.shopjimmy.com/media/ca...j27d023893.jpg
I see 16 3-pin MOSFETs on the board.
http://assets.shopjimmy.com/media/ca...j27d023893.jpg
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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 -
Re: insignia. no picture/back light
What do u mean by 8 pins surface mount ??Comment
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Re: insignia. no picture/back light
Budm there is 3-4 that seem to test good ..but i will repl.ace all to be safeComment
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Re: insignia. no picture/back light
Would the hot air station work better of the. iron ?
I guess if i dont do it right i will have to get another inverter board off ebay.
Them boards are kinda hard to find .Comment
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Re: insignia. no picture/back light
Well i will c if i can get them mosfets off the parts board then go from there .Comment
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Re: insignia. no picture/back light
Would a 100 w resister. on each bad mosfits get the mosfits to work ?Comment
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Re: insignia. no picture/back light
No, a resistor wouldn't restore the operation of the MOSFETs; why would it?
I would use hot air, with soldering iron, it's a lot easier to accidentally take off a smd pad.
With that many failed FETs I'd also consider replacing the driver chip - chances are it is OK but if it isn't, your FETs could go pop again.
(For a quick test, you could try with only one pair of FETs soldered down. The inverter SHOULD do a 2 seconds to black fault and you will get a brief flash from some of the bulbs. It'll stop you blowing all of them at once.)Last edited by tom66; 02-05-2014, 07:42 AM.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: insignia. no picture/back light
There is 2 sets of mosfets good on that inverter board. But no 2 sec to blackComment
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Re: insignia. no picture/back light
All fuses replaced?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: insignia. no picture/back light
The 2 white ones were. what can i use to replace the blk
fuse tho?Comment
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Re: insignia. no picture/back light
well im just gona take a chance n buy a inverter board
hope this is all it needs ! will post back on results.
thanks for the help guys !Comment
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Re: insignia. no picture/back light
i just wanted to give a update on this. i just got a inverter board
and now i have backlight and a picture !!
now i can move to the other ones !
thanks guys 4 helping !Comment
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hi guys, i need your help again...i have tcl u65x9006. while i was watching it become darker like when a movie ends, little by little the image disappear. now if i turn on i have back light on, after like 1 min i have also sound but no picuture. the back light is on i take off one at time the ldvs but nothing change always no picture. i tried to cover with a piece of paper the pin of ldvs i cover like 7 8 pins but nothing worked. the tv stay with no picture. there is a tcon board.i checked the voltage there on the fuse i have 11,8 volts. there is caps in shorts on the exit of the tcon i have... -
Hi people!!
The owner said it showed bad picture once in a while (attached)
I see that there is back light but no picture.
I want to ask if it is possible to disable the NVIDIA GPU and use the intel one?
Also attached schematic and BDV
LINK to schematic & boardview - https://www.badcaps.net/forum/troubl...ll-vostro-5590... -
This happened last Saturday and today I finally had time this morning before I went to work to replace two non brand capacitors
I will let you be the judge weather or not these are bad or not according to the blue ESR meter that I am using
I am comparing them to a brand new one that I installed
The display came back on and the programming was not lost which I was surprised by I would have thought that when the display went blank that so did the memory as well
I going to let it run for several days before I remount back on the wall next to the... -
Hi Guys,
This forum has been in great help to me, but I stumbled upon a strange problem with a salvaged Samsung TV that I am banging my head to troubleshoot.
PSU: L48S6 FHS BN44-00807D
T-Con: BN95-01937A
Panel: CY-GJ048HGLVLH
MB: NA (Currently as the TV is assembled and forgot to take picture)
As I said earlier I have some issues with the TV I got from a friend of mine. The TV had no picture, but sound, back light and everything else was working fine.
It was sent to an authorized service for repairs and returned with the... -
LG 47LB6500.ATR - No Picture/No Back light but has standby voltage
My living room TV kaput after lighting storm along with Cable Set-top Box connected via HDMI-3.
So, with my little knowledge of electronics I thought of fix it by myself.
First, I searched forum for any case registered existing if anyone have same issue/symptom.
Found some few case near matching But not really the same !!!
Now decided to open a new thread.
Brand: LG
Model: 47LB6500.ATR
Panel: LC470DUH (FG)(P2)
Main Board: EAX65363904
...
Comment