Re: identity tv part
There is no short between cn201 and 5vsb. What I was doing is, in ohms' mode. Black lead to frame ground and touching red lead to legs of components " resistors, misfits ,capacitors, transforms cold side " shows grounded. That is not good right?!
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Re: identity tv part
So the resistance reading between GND pin and the 5VSB pin is showing less than 1 OHM?Leave a comment:
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Re: identity tv part
I can do that,ASP. Thanks for your infoLeave a comment:
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Re: identity tv part
It might be, how about turning the board over and trace the line to see if it goes to ground, it's hard to tell looking at pictures only.
"Tracing from the 5v pins . Everything shows grounded"Are you saying that you have a short on CN201 between SGND and 5VSB?Last edited by R_J; 01-29-2018, 07:55 PM.Leave a comment:
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Re: identity tv part
Should it be grounded. This leg is the only one from all 3 ic'sAttached FilesLeave a comment:
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Re: identity tv part
Ok here what I have discovered. Before I removed the power board to take pics. There was no voltages on any pins . Everything on hot side shows voltages. I believe there all right. No voltages on cold side. But when I went to put the board back. I only used a couple of screw's. I rechecked the pins. To my surprise there are voltages on the pins. When I put the bottom right screw in. Lost all voltages on pins. Tracing from the 5v pins . Everything shows grounded. All the way up to pc702 which looks like a IC but only has 4 legs. . I will post a pic. I hope you understand what I'm sayingLeave a comment:
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Re: identity tv part
Check if R901 or R902 is open, and if Q901 is shortedLeave a comment:
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Re: identity tv part
https://www.badcaps.net/forum/attach...5&d=1517185124
So you are 100% sure that you do not have any DC Voltage on the 5VSB pins at all?Leave a comment:
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Re: identity tv part
Ok . Can you please tell me if the pictures are good enoughLeave a comment:
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Re: identity tv part
Board number 0500-0407-0680Attached FilesLeave a comment:
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Re: identity tv part
Bottom right. Hope they are okAttached FilesLeave a comment:
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Re: identity tv part
Think I have to upload one at a timeAttached FilesLeave a comment:
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Re: identity tv part
Gotta. I'm trying to add pictures but after upload.stays on that screen and I click"close this window" goes back to message and everything I wrote is gone. Trying to figure it out ��Leave a comment:
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Re: identity tv part
We need good clear pictures so we can see what we are dealing with, must provide straight shot pictures of the top and bottom side of the board, the pictures must be clear enough to be able to trace out the cooper trace on the bottom side of the board.Leave a comment:
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Re: identity tv part
Thanks. This is a vizio VO47LFHDTV30A Has no voltages on plug/cable going to main board. Checking voltages on hot side,using negative side of large cap for ground. Everything seems ok. It's when I get to the small transformer is when there is no voltages. I will try to add pics.Leave a comment:
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Hi There!
I'm trying to help my friend who owns a restaurant be just bought.
He has a very long LED strip running along all the walls and columns. The strip is attached facing down 2in above the floor, using a wall panel that ends in a metal rail that finishes the panel underneath
It's stuck using, I guess, the 2 sided tape that comes with the strip
The issue is that like 1/2 of the full length, including 1/2 one wall, another entire wall, and one column, flickers after 4 or 5 minutes ON. Particularly it flashes staying OFF most of the time and flashing ON for 1 tenth... -
So My iPad was not charging and booting up . i went to a local technician and he checked with thermal and this Part marked in 1st Photo is Short.
So then i went on to boardview and downloaded the schematics and identified this part in 2nd Photo. Now i am confused what exactly is the part called ? where should i get this from ?
i contacted my technician and he sent me his BoardVIew screenshot in 3rd Photo. In his Boardview the part is called X2826.... Something
SO My main concern is what part should i order what should i search the name for ?
on Ipad... -
hi all,
first of all: i'm a (motivated) newbie, so please forgive me any stupid question i may or may not ask
i'm currently repairing a projector: Epson EB-U42 that doesn't start (no lights, nothing).
what i've found so far:
- the PSU does its job and supplies 12V to the mainboard via the connector.
- shortly thereafter, there is a mosfet (TS420-600B) where i can test 12V on the one side (in the data sheet this side is called Anode), Gate 0V, Kathode shorted to ground
- not far away, there's the first cap with a resistance of 0.7 ohms.... -
In the Panasonic service manuals, both in the board schematics and in the part listing, the part numbers that are given are Panasonic part numbers instead of the actual part numbers.
This is especially annoying for small SMD components like diodes and transistors when you only have 1-3 digits printed on the component body.
For an example, look at the attached PDF.
Do you have a way to cross reference the Panasonic part number with the actual part number?
Thanks....07-03-2023, 08:16 PM -
Hello guys. I'm a complete noob in electronics. I'd like to repair my child Lunii's (a "story box"), basically an audio player that allows the childs to choose between several options the places, characters, objects of the story, and then play a story according to the choice of the child. There is a screen that display the selected option before each choice. The Lunii fell and the screen is now broken.
I'd like to repair it (probably just have to change the part, because the lunii still works perfectly fine) but I can't manage to identify the part/order it online. Do you have any...02-17-2025, 01:16 AM
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