Hey guys. Just wanted to say this forum is an awesome resource for many people. I have a Seiki 55" LED TV with no sign of life what so ever. No Standby LED and pressing power or remote produces nothing. Basic troubleshooting I have done so far: Verified power is hitting the power board but no 5v, 12v or 24v detected. I will post some pics of all the boards soon. I do not see a PSON label on any of the connectors. Main connector going to mainboard has 4 5v pins, 2 12v pins, a few ground pins and a 5VSB and STB pin. I will post pics soon thanks.
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Re: Seiki Model#-SE55GH01
Please see pics of the boards attached thanks for any help you can render.Attached Files -
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Re: Seiki Model#-SE55GH01
disconnect the main Av board.
Fully check the power supply and confirm that 5v is not being generated.
If you're certain there's no 5v then then the power supply is faulty.
The diodes in the secondary side of this board tend to short.
Best to check them by removing a leg of each one so they are not in circuit.Comment
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Re: Seiki Model#-SE55GH01
The main AC fuse is OK?
Do you get DCV of 160VDC measured between the two legs of the main filter caps (39uF 450VDC) either C1 or C2?Last edited by budm; 07-27-2015, 02:14 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=24809Comment
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Re: Seiki Model#-SE55GH01
Thanks guys will check this and let you knowComment
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Re: Seiki Model#-SE55GH01
BudM yes the main fuse is good. I do get a steady 164.5VDC across the main filter caps (3 of them). Still testing the diodes.Comment
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Re: Seiki Model#-SE55GH01
We will need good clear pictures of the bottom side of that power supply board next.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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Hello, I search this connector (oxydated).
It's a fpc zif low profile connector. It come from camera sensor, it is very small : 0.3mm between 2 pins.
I ordered 2 from Aliexpress called « 0.3mm pitch » but one was 0.5mm between 2 pins and the other 0.6mm. In fact « 0.3mm pitch » seams to be the pad width and not the distance between 2 pins.
I can't find it. The other websites like mouser dont show the datasheet, and I can't check if it is 0.3mm between 2 pins ?
Do you know how to find this connector please ? What is the exact name for find it ?
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Hi guys.I got myself used RTX Aorus Xtreme 3080.I have not yet tested it, due to waiting for PSU with 3 PCI-E cables and GPU holder.
However today on sunlight I noticed that on one of the connectors one of pins is in darker color then the rest of us.
Paranoia hit me that maybe card is damaged.
I don't know if you can see on pics (on pics looks like one of the pins is missing, but is it not, it is dark and covered with shade).
I tried to zoom in but get blurry pics.
If you can not see,I will try to picture it again.
What to do now?Could it be potential issue... -
vizio e650i-a2 (LWJAOZBP Serial) led backlight flashes then turns off, has video (via flashlight) and audio.
panel: au optronics T650HVN05.4
72 led total on 12 strips, 6 led per strip wired in three groups of 24 (led driver board has three anode and three cathode pins)
link to datasheet: https://datasheetspdf.com/pdf-file/8.../T650HVN05.4/1
Vizio 56.04219.641G (liteon PA-3231-01WN-LF) Power Supply Unit
https://www.shopjimmy.com/vizio-56-0...-power-supply/
Vizio 55.75J01.001G (91.75J10.004G) Main Board... -
Hello,
I am a new forum member. I found a broken MSI motherboard with lot of problems. The other problems need schematic. Because, the missing parts what were breaking down with screwdriver and pliers at a standoff.
So, its actual problem is a missing Vcore and Gnd pins in the CPU socket. My question is that, can it be used safely without these two pins? Only for testing at first, while the other problems will be solved. I would wish repair them later.
The other spots are thermal phaste, because, the under educated installer of the CPU did wipe the contacts of the... -
Hello All,
tl;dr: minimal electronics experience and my first repair, lifted 8 pads off the laptop display LED controller board when attempting a connector replacement, options are attempting pad repair or jump wiring.
Laptop Model: MacBook Pro 15 Mid-2014 Retina, A1398 MGXA2LL/A
eDP Display: Samsung LSN154YL01-A02, assembly sold as Apple part 661-8310
Soldering Equipment: Hakko FX-888D w/ T-18 tips (Chisel, Conical, Bevel types)
I needed to replace the 30-pin I-PEX Cabline connector (labeled J8300 in the Apple 820-3662 mainboard schematics),...
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