hello
i got this tv backlight comes on screen is lit up but no picture but has sound
voltages seem fine as well
i got this tv backlight comes on screen is lit up but no picture but has sound
voltages seem fine as well
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Re: Digihome 32dled906
Top center under the metal shield is the tcon. There will be a fuse somewhere close to the connector, check it for continuity (with power off). -
Re: Digihome 32dled906
yeah already tested that the fuse seems fineComment
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Re: Digihome 32dled906
Do you have 12V both sides of fuse?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: Digihome 32dled906
yes 12.2 volts both sidesComment
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Re: Digihome 32dled906
Can you remove the shield from the T-con and get us a picture of the board.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: Digihome 32dled906
photo attachedAttached FilesComment
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Re: Digihome 32dled906
With the board installed in the set, try testing: VDD, VCC, VGH and VGL.
Expecting:
VCC - 3.3V or 5V approx
VDD - 15V approx
VGH - from 20V to 33V approx
VGL - from -4V to -10V approxPlease 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: Digihome 32dled906
VCC - 3.24v
VDD - no reading
VGH - no reading
VGL - -5.93Comment
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Re: Digihome 32dled906
For no reading, do you mean 0.00 or a single "1".
You may have to use next voltage range up e.g. 200VDC.
Can you try those measurements with the LCD panel ribbons disconnected?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: Digihome 32dled906
sorry tom i mean 0.00
ok VGH IS 3.1V set on 200vdc
VDD at 200vdc is still 0.00Comment
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Re: Digihome 32dled906
opps ill try the test now with ribbons disconnectedComment
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Re: Digihome 32dled906
If the voltages rise when the panel is out, it might be a bad panel; if not, it looks like a bad T-con board. I'll have a look in my pile, but I think I might have a T-con for this.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: Digihome 32dled906
the same readings with panel ribbons disconnectedComment
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Re: Digihome 32dled906
Good, I would think the T-con is bad then. I will search my piles. I do recall removing it from a smashed 32" Vestel (CCFL-backlit Alba model, 720p LG panel) but where it got put is another question.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: Digihome 32dled906
ok thanks tom let me know if not ill source one otherwise
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Re: Digihome 32dled906
Unfortunately, the board I have only has one ribbon connector. It is an LC320WXE-SCA1 if you need it for another project though, I will stick it in the post.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: Digihome 32dled906
Ok thanksComment
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Re: Digihome 32dled906
Update: Board arrived today tv all working again so testing it now
thanks guys
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Re: Digihome 32dled906
Glad to hear, another one fixed.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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Hello, I disassembled this dead camera, and found this WTF… Two fuses soldered one above the other !
I was pretty sure nobody touched it before, but that can't be from factory. There is flux, and capacitor is probably missing.
The other weird thing : the fuses are « G » fuse : (0.75A – 8V), seems very low. The original fuse should be « O » : (32V 2,5A).
There is « O » mark beside. All fuses have the same mark letter on main board. So, I can deduce it's a « O » fuse.
And this correspond to the issus I saw : when I plug the battery, I measure the voltage dropping... -
Hi there,
I am looking for help with my broken 980ti. Had a bad DrMos (the bottom one) and replaced it, card worked for a short moment, but I got another shortes DrMos (second one) and replaced that one aswell.
Now I don't measure any shorts, I have 12v, PEX, 5v, 3.3v all working fine (probing points on card), but I can't get any voltage at FBVDDQ or NVVDD probing points.
Where could I check to find the fault?
You think my first DrMos could be bad, because I read that the first one will activate core?
Don't want to replace that one when I can just test other...05-11-2024, 10:41 AM -
Hello All,
This is a weird one. This M1 Macbook Pro was brought in for liquid damage. Customer was getting video only on external monitor. Most liquid damage was located around the backlight circuitry, namely the backlight capacitor bank. It was not too severe. Ultrasonic cleaned and about 3 corroded capacitors replaced. FP800 backlight fuse was also blown. Nothing down the line from the fuse is shorted. May have blown this fuse from overload during liquid being present.
Also had to repair area of QD530 which is PBUS VOLTAGE SENSE. Repaired traces to RD531 and RD532... -
Hi I wonder if anyone might be able to steer me in the right direction. I have this Samsung UE46ES8000 TV and it went bang during use. The main fuse on the PSU board is open. I've checked every diode/mosfet/transistor I can see and nothing appears to be short to cause the fuse to go. The DC output of the bridge rectifier is not short either. I've seen online that some of these models are known for having their PFC mosfet or other mosfets shorting and blowing the fuse but i'm not seeing that here. If anyone aware of these models having any issues to cause this? I'm reluctant to just replace the... -
Hi guys,
I'm inexperienced with electronics repairs, I've done a little bit of soldering caps and whatnot, but i have a blown fuse on this mimaki printer I got which I have bought a replacement for.
How do I remove this type of fuse (see picture)...it kinda looks like it would pull out of that bracket but it didn't come at first pull and I didn't want to brute force it incase it's soldered on there like most of the rest of the components.
Anybody know how to remove this type of fuse?
(The fuse is toward the bottom of the image labeled F2)...
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