Re: sanyo
sorry budm, I try until my eyes hurt. the only thing I see is either a m or n a5 and 1. the rest is unreadable.
sorry budm, I try until my eyes hurt. the only thing I see is either a m or n a5 and 1. the rest is unreadable.
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Re: sanyo
Budm, this is what I found out of u1504 5 4
6 3
7 2
8 1
on pin 2 show .29v on pin 6 show 11.v The rest of pin have no volts.Comment
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Re: sanyo
I do not know if it is Dual MOSFET or what, it will hard to figure out the circuit without knowing what that part is.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: sanyo
Sorry, I was out of tow. I has try to see if I can get any type of number but is impossible do to the condition of the chip. should I try something else or should I get a board thru ebay? Do you think the main board has anything to do with the problem? If there a possibility that both board are bad? It can become quite expensive if I has to replace both.Comment
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Re: sanyo
Let me know what do you think. Will way for your answer before make a decision.Comment
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I acquired a free 50” TV. IT is a Sharp LC50LE752E. It does not show a picture and has no backlight, although the indicator light turns blue meaning it has turned on.
When power is plugged in, the indicator light will turn on blue, the backlight stays off and nothing is visible, even with a flashlight. When pressing the touch buttons on the tv nothing happens. When pressing buttons on the remote control the indicator light will blink indicating the IRsignal was received, but nothing happens.
When I hold the force-on-combination it will turn on. It then shows a perfect... -
Hello Community!
CASE DETAILS
Promblem Signs: Backlight on 1 sec off 7sec > repeat && Red standby light: 1blink, off 3 sec, 2 blinks, off 5 secs, 2 blinks, off 3 sec, restart cycle
13V present on powerboard output. Backlight continues flashing after removing cables to pannel one at a time and even with both disconnected. NOTE: backlight STOPs flashing and remains on when connector between powerboard and mainboard (note Tcon built in) is disconnected.
Tried inserting firmware on USB and left it in for a few hours, but no change
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No backlight issue. Have sound and can see menu with flashlight.
Suspect LED driver, voltages are 100V each side. What should the voltages be for 75 inch TV on the Power Supply Board? I have 96 leds x3 volts per=288/2=144 volt per side?
Am I low on my volts causing the leds not to light up?
Before I got all backlights out, the right side was a bit darker than left side. How many leds
need to be out for all to not work?
Thinking of getting a led tester. If leds light up, would that confirm it is the Power Supply Board?
I do not want... -
I bought this p2210f dell monitor to fix. Schematic is the same as p2210.
Behaviour is that monitors comes on but then backlight switches off almost instantly. If I look with flashlight I can still find the "No signal message". So definitely a backlight issue. Trying to advance the issue I proved that the protection circuit is switching off the backlight by shorting out C3 and resistor to disable the INL chip then re enable by removing the short.
This is where it gets interesting. When I disassembled the monitor to solder leads on c3 capacitor I noticed the backlight flickered... -
Hello everyone! I've found this television, and I began troubleshooting it.
First, the television kept rapidly power cycling. I've warmed up the capacitors with a hairdryer, and after 3 dimmed red blinks, the backlight turned on, then turned dim, and no picture was present on the screen.
I believed that this was caused by a bad power supply producing insufficent power (I've measured 3.5v on the 5.2v rail), so I've blindly recapped the board.
After the recapping, all the voltages stableized, however, the issue in the title still remains.
I could...
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