Re: Toshiba 55LF621U21
Hello all,
Tried the flashlight thing and it is showing info on the screen! I am so excited. I just wish I had a service manual to order the LED's and have them ready when I try to take this thing apart. I know how delicate they are. To bad they don't make the sets where the LED is like changing a light bulb. You know, like slide the strip out the side of the TV, Slide the new one in and connect and GO!!
Thank you to the guys at HEGE supporting Badcaps [ HEGE ] [ HEGE DEX Chart ]
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Re: Toshiba 55LF621U21
I was not able to see anything. But thought I did. LOL
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Re: Toshiba 55LF621U21
Thank you so much for all the help. The video was a nice touch. Thanks
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Re: Toshiba 55LF621U21
So, as it turns out- J205 is BLON. 0V at plug in no buttons pressed. When the power button is pressed, it is 2.99 then red light goes out. When the red light is on BLON is 0V. Sometimes at power on the red light will blink about 12 times then go out.
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Re: Toshiba 55LF621U21
I will try to monitor BLON. But, if +VLED is toggling, does that not mean BLON is doing something? What indication should I look for on BLON? Is the +VLED going for 90V to 170V normal or is it confirming an issue with the leds not dropping any voltage? Thank you.
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Re: Toshiba 55LF621U21
First off, thanks for the great advice. Reset did not work. Plug tv in no buttons pressed led+ is 90V. 12v1=9.1 pwon=0v 18va=14.6 blon did not measure, When the pwr button on remote is pressed, 12v1 goes to 12 pwon goes to 3.1 18va goes to 18 and led+ goes to 170v. The reason I did not see was blon was doing, was an accessibility issue. I was not sure where to monitor a pin I coild not get to. Thank you
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Re: Toshiba 55LF621U21
Hi,
The symptoms are the set does not come on. The red set indicator lights and appears to respond to remote inputs but that's all. I cannot determine if there is sound as I do not know what is any indication there is. I have measured 2x12v 1x3v 2x18v but nothing on the led connector. I do not even know how much potential to expect there. If I bad a schema, I could hunt for some missing electrons. Thank you
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Toshiba 55LF621U21
Hello,
Does anyone have the schematic for this set or the Power Supply 1T920000900. Thank you...
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Re: Samsung UN65JS9500 / BN44-00818A - no LED backlight
Hello, I am troubleshooting a Toshiba 55LF621U21 without a schematic. My voltages are good but there is no backlight or backlight voltage. I don't know what it should read anyway. LOL If I can find a schematic for this set or even just the PS board, that would help a lot. The board is 1T920000900. The area around the LED driver looks like it gets hot but I checked R903 and it checks good for ohms. No power at P803. I would appreciate the help. Thank you...
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Re: Phillips 50PF7320/10 50" plasma no picture or sound
Does a schematic exist for this beast? My Phillips 50PF9630A/37 with LJ44-00108B power supply quit working. I found IC8003 with its case blown off. The fuse next to D8015 was blown F8002?? I have checked all other fuses an "low' ohm resistors and so far so good. I can fix this if only i had the schematic that has the parts with the correct "8000" series components like the PS-424 troubleshooting guide has.
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