Re: Transistor for TV problems
same part number, but it does not need to be the same maker.
so an AZ1117-3.3 could be swapped for an LM1117-3.3 for example.
if it's a 1117 you just need to match the voltage.
Transistor for TV problems
Collapse
X
-
Leave a comment:
-
Re: Transistor for TV problems
yes,
3 pins usually.
one is the input, one is output and one is either ground, or goes through resistors to set the output voltage.
go download a datasheet for a 1117 regulator.
https://duckduckgo.com/?q=1117+datas...t-wt&kv=1&kh=1Leave a comment:
-
Re: Transistor for TV problems
Yes, there are regulator ICs on the main board.
Your TV has more than one versions so I do not know exact one that you have, they are not cheap.
http://www.shopjimmy.com/catalogsear...q=Vizio+E470VLLeave a comment:
-
Re: Transistor for TV problems
Yes, there are regulator ICs on the main board.
Your TV has more than one versions so I do not know exact one that you have, they are not cheap.
http://www.shopjimmy.com/catalogsear...q=Vizio+E470VLLeave a comment:
-
Re: Transistor for TV problems
Is there a voltage regulator on the vizio main board? Or only on the power board?Leave a comment:
-
Re: Transistor for TV problems
My personal experience on almost every Vizio main board from this era is as follows:
If the screen lights up briefly with the vizio logo then freezes, the eeprom usually fixes it. If there is no backlight as you've describes but the logo changes color, then 95% + of the time it's going to be one or more bad voltage regulators.Leave a comment:
-
Re: Transistor for TV problems
My personal experience on almost every Vizio main board from this era is as follows:
If the screen lights up briefly with the vizio logo then freezes, the eeprom usually fixes it. If there is no backlight as you've describes but the logo changes color, then 95% + of the time it's going to be one or more bad voltage regulators.Leave a comment:
-
Re: Transistor for TV problems
I am not sure if this EEPROM problem or not, look at shopjimmy website to see.
The metal shield is for the main processor.Leave a comment:
-
Re: Transistor for TV problems
Can a eeprom fix this issue? And what's under that metal rectangle in the middle of the main board?Leave a comment:
-
Re: Transistor for TV problems
OK, then the problem is on the main board and will require more troubleshooting.Leave a comment:
-
-
Re: Transistor for TV problems
It is not showing as shorted circuit, using Ohm meter can only do so much for testing the MOSFET, but this MOSFET has nothing to do with what the TV is doing right now, it is the main board that is not sending the signals to turn on the power supply board and the inverter board but we need to know if those Voltage readings are made with the power switch is activated or not, that is VERY IMPORTANT info I need to know.Last edited by budm; 05-14-2015, 09:19 PM.Leave a comment:
-
Re: Transistor for TV problems
Are these readings with the power switch activated? If it is activated, then the main board is the problem.
https://www.badcaps.net/forum/attach...7&d=1431658037
We will need good clear pictures of the whole back side of the TV to see all the boards.Leave a comment:
-
-
Re: Transistor for TV problems
https://www.badcaps.net/forum/attach...7&d=1431658037
We will need good clear pictures of the whole back side of the TV to see all the boards.Last edited by budm; 05-14-2015, 08:57 PM.Leave a comment:
-
Re: Transistor for TV problems
That is body diode of the MOSFET you are seeing, the Cathode of the Diode is connected to the Drain pin (middle pin), the Anode is connected to the Source pin (right pin), this is N-CH MOSFET.Leave a comment:
-
Related Topics
Collapse
-
Hello,
on this laptop hp g72 b52sf i have screen problems as you can see with the photo joined in attachments.
the used graphic card is "intel hd graphics" and the id of the integrated screen is : "monitor/SEC3354".
i verified the driver of the pΓ©ripherals and they are ok. i verified the definition and settings of the graphic card and of the screen : definition 1600x900 and refreshment frequency :60hz. (they are the sames for the graphic card and the screen).
i don't understand the reasons of the white stripe at the bottom of the screen below the task... -
by HondamanRecently I discovered my SSD died (OCZ/Toshiba 240 GB). It was in a USB enclosure, attached to the Linksys WRT-AC1200 router. Since then I removed the USB enclosure and attached it to my Win7 PC (AMD 8150 CPU, 970 chipset, 64 GB RAM). I also gathered one or two other USB enclosures to figure out what is going on.
(I suspect that I lost quite a few MP3 and FLAC files I recently ripped from my audio CDs, I think I lost very little un-replaceable stuff.)
I think it is IMPOSSIBLE for Win7 to have any problems with a USB enclosure as long as Win7 knows how to speak to the...-
Channel: General Computer & Tech Discussion
-
-
by magnehHello
Got this speaker from a friend , defective. Power led comes on and off , in a loop.
Disassembled, got the board out, and after a bit of measuring I found a low resistance on a 5v6 line. With a bit of current I found a transistor heating up on that line (labeled T1 and 113 as on pic).
After removing this guy, I got a value of 0.7 in diode mode on that 5v6 line, which before had 0.02 or something like that.
I tested powering it up without the IC, and the speaker turns on and stays on, and works fine
Still, I need to replace this transistor.... -
by clabrNeed help to solve some problems with this laptop.
After working in bed with it one night and heating up too much (probably the cause of this problems) the sata HDD OS windows froze
After restart the original Sata HDD was not recognized anymore (but works fine in other laptops or PCs)
Tried connecting other good Sata 2.5 HDDs but not one is working in this laptop anymore (not the original nor others)
Before this had happened I observed some other problems:
When I tried replacing original mecanical HDD with a SSD HDD could not get them... -
by elsomerhi people, i need some help to identify a transistor(q14) that is missing on the board, so the gpu has no voltage i think that q14 activate the phases for gpu, but i dont have schematic or boardview, but i think its the same transistor than q15 and q16, thanks...1 Photo
- Loading...
- No more items.
Leave a comment: