LG 50ps3000 red haze

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • wreksta
    Badcaps Veteran
    • Aug 2013
    • 508
    • england

    #1

    LG 50ps3000 red haze

    hi al I had this set in today and the tv powered with white screen I have sorted that now the picture has a lot of red haze im led to believe the zsus needs a repair upon investigating the zsus I have found 1 blown mosfet and a resistor the white ceramic type

    I noticed the repair kit comes with surface mount capacitors are these need for the repair

    http://www.ebay.co.uk/itm/LG-50PS300...item3f24baeb63

    or will I get away with just replacing the mosfet and blown resistor

Related Topics

Collapse

  • Jane
    How do you test MOSFET in laptops ?
    by Jane
    I tried to use this method:

    Testing an N-channel MOSFET:

    Step 1: Discharge the Gate (turn off the MOSFET)
    Place the black probe (COM) on the Source (S) and the red probe on the Drain (D). The multimeter should show no continuity (high resistance or "OL" – open line).
    Then, touch the black probe to the Source (S) and the red probe to the Gate (G). This discharges any stored charge in the Gate, turning the MOSFET off.

    Step 2: Charge the Gate (turn on the MOSFET)
    Now, place the red probe on the Gate (G) and the black probe on the
    ...
    09-27-2024, 03:31 AM
  • mikey5791
    Need help to replace burned resistor in 350w atx psu
    by mikey5791
    Hi to all forum members,

    Got this faulty 350 watt atx psu dirt cheap from a local online seller as i am keen to use it as a learning tool to repair faulty power supply.
    The faulty part is quite obvious from the burn area near the 16pin KA7500 BD pwm. The fuse is still intact with good continuity.

    Upon power on ac, there is 5vdc standby power on cathode of diode D14 and about 10vdc on cathode of diode D13.(This should be the aux power to generate the 12v and 5v rail.)
    Initially i replace the two burned resistors near my marked red arrow to 200 ohm resistor...
    12-26-2024, 04:55 AM
  • Nooy
    VGA MOSfet permanently shorted and loss of MOSfet pad
    by Nooy
    Hello everyone, I recently found this badcaps site and super Learn Electronics Repair youtube channel. And I wanted to learn how to troubleshoot power supplies and VGA cards and how to practice soldering, since I already have a properly defective piece of them. I am currently trying to solve two problems:

    I have a Gigabyte GV-RX460WF2OC-4GD type card. I managed to find the faulty MOSfet (AON6414A) on it, which I replaced. The card starts up, but after about half a minute, the MOSfet in the same position will be shorted again. Is it possible that the PWM controller driving the MOSfet...
    02-14-2024, 02:26 AM
  • MidnightRoller
    Can a resistor lose resistance after hot air?
    by MidnightRoller
    I am curious if a 0402 resistor could go from 43 ohm to 0. In electronics class and my experience a resistor can degrade and gain resistance all the way up to not being able to conduct at all. I have never heard of a resistor decreasing in resistance and becoming 0 ohm or a dead short… that's not the direction they fail… or so I thought.

    I was attempting to remove a wson8 chip on an iMac motherboard and it required a lot of heat, on one side of the chip were 3 0402 resistors that were very close. I popped the chip out unintentionally out of the tweezers and sent those resistors...
    02-02-2022, 11:46 PM
  • artvandalai
    What resistor ohm will work better to repair this waterpik?
    by artvandalai
    The resistor on this waterpik blew. I changed it with the a similar spec 47ohm 2 watt yageo resistor but it still keeps blowing the resistor. Checking with the multimeter the motor, capacitor, diodes, and thermal fuse all checked normal. Will a higher ohm resistor work better? What ohm resistor will work better to repair this waterpik? This video is showing the repair with a 56 ohm resistor https://www.youtube.com/watch?v=_J7_rV7ui1Y
    01-05-2025, 04:10 PM
  • Loading...
  • No more items.
Working...