This unit has dead power supply, narrow the problem down to bad SMPS IC U101 WP35 (LD7535), the Gate drive pin has less than 100 Ohms reading. Got new IC from UTSOURCE (Ebay) and it is fixed.
Attached Files
-
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=24809 -
Re: AFFINITY LE3250 repair
"Power Soupply"
It worries me when a manufacturer of electronics can't proof read. What other things did they miss?
Nice fix, looks like a new TV.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search. -
Re: AFFINITY LE3250 repair
Less than 2 years old, it has good pictures, the screen is TOSHIBA.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
-
Re: AFFINITY LE3250 repair
I have never heard of Toshiba making large LCD panels, interesting.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
-
Re: AFFINITY LE3250 repair
Some excellent photography also.....Good job..Comment
-
Re: AFFINITY LE3250 repair
I have this exact TV that is dead. Can you tell me how to find and measure U101? Your pictures aren't loading for some reason.Comment
-
Re: AFFINITY LE3250 repair
Off topic but since there are references to mistakes I found this quite funny :Attached FilesComment
-
-
Hi
Am after a schematif for 17IPS12 that uses the BM1Q001FJ-E2. I have pdf for the V3 version that uses FAN6300 but circuit is not the same.
Any help appreciated!... -
ISL6257HRZ ISL6257HRZ-T Laptop Battery Charger Datasheet
Highly Integrated Narrow VDC Battery Charger for Notebook Computers
The ISL6257HRZ ISL6257HRZ-T is a highly integrated battery charger controller
for Li-Ion/Li-Ion polymer batteries. ISL6257 is designed for
Narrow VDC applications where the system power source is
either the battery pack or the regulated output of the charger.
This makes the max voltage to the system equal to the max
battery voltage instead of the max adapter voltage. Operating
at lower system voltage can improve...11-05-2024, 04:43 PM -
Laptop: Lenovo Yoga 3 14 (80JH)
Logic Board: BTUU1 NM-A381 REV:1.0 2014-11-17
Issues:- not powering on
- bottom of the laptop getting hot
Background:
Laptop not turning on. On-board voltage from AC adapter was jumping between 3V (do not recall correctly) and 4.xV, and the fan spinning/stopping on its own.
Initial readings:
...Code:PL202=4.12V 10.5 Ω .010V drop Hot Area PL201=1.06V 44.1 kΩ .320V drop Hot Area PL401=0V 55.4 Ω .143V drop PL801=0.04V 71 Ω .050V drop PL301=0V 112 Ω
10-28-2021, 10:44 AM -
I'm repairing an Acer AL1916 monitor PSU at the moment. The 400v high voltage smoothing capacitor C114 is measuring completely O/C. The case of U101 has blown apart. Fuse F101 has blown. ZD121 reads 6 Ohms in both directions & ZD120 reads 99 Ohms in both directions. While looking at the data sheet of U101 (DM0565R), I noticed that the absolute maximum voltage for Vcc is 20v. However, the zener diode across the Vcc pin to GND is a 1N4748A (22v).
Now, whether that zener is used to constantly regulate the voltage, or whether its's used to protect the Vcc voltage from rising too high,... -
Hi,
I'm new to this forum, so this is my first post. I have an LED TV LG Model 60UH8500 that stopped working suddenly. The standby LED is on, but when I try to turn the TV on either using the remote or the power button on the TV, the red standby LED blinks 3 times, but nothing else happens - the TV screen stays dark, no picture and no sound.
Here is what I did so far... I removed the back cover and checked both the power supply board and the main board for any obvious visual cues such as burnt diodes, bulging caps, etc. Nothing observed. I checked 2 fuses - GOOD, tested...
Comment