Magnavox 32MD311B/F7 2 Seconds to Off - Fixed

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • mmartell
    Badcaps Legend
    • Oct 2013
    • 3189
    • Canada

    #1

    Magnavox 32MD311B/F7 2 Seconds to Off - Fixed

    Symptom - Tv would display splash screen and shut down a few seconds later.

    Heating the inverter near the octocouplers would allow it to come on and function properly.

    Replacing Q1970 (transistor C3200) fixed it. The transistor tested open E-C when finally removed from the circuit.

    This inverter is in at least one other set so maybe this will help somebody else down the line.
    Attached Files
    Last edited by mmartell; 05-15-2015, 05:38 PM.

Related Topics

Collapse

  • Lisanimaux
    Toshiba FireTV image jumps every two seconds. Can it be fixed?
    by Lisanimaux
    Hi,
    I don't know if someone can help me, but I'm going to give it a try anyway! I made sure to look up my issue before posting, but I couldn't find any thread for this TV model. I should also mention that I never fixed a TV before, please bear with me!

    My Toshiba 43LF621U19 REV. B started acting up lately. I tried looking up its "symptoms" online, but I can't seem to find anyone experiencing the same problem, which makes it hard to figure out if this can be fixed and/or which part(s) should be replaced.

    The TV was purchased brand new in June 2019....
    01-13-2021, 11:04 AM
  • zklgfs
    Anker SoundCore 2 Bluetooth Speaker Turns Off After a Few Seconds (Possibly Firmware Issue?)
    by zklgfs
    Hi,

    I have an Anker SoundCore 2 (A3105) that I saved from the trash (well, I guess there's a reason why it was supposed to go into the trash...). The problem is that it always turns off after a few seconds (sometimes it stays on a bit longer, between 30 and 60 seconds, but it still turns off). The power light turns on and the bluetooth light starts blinking, but both abruptly turn off again. The "turn off sound" is still played after the lights turn off. Sometimes, it also loops the on-off cycle several times without me pressing any buttons. If I connect an AUX cable, music...
    08-11-2025, 02:14 PM
  • twonk9098
    Lenovo Legion 5 high fan spin turns off after 34 seconds
    by twonk9098
    Hi all,

    I have a Lenovo Legion 5 with a Ryzen 7 series CPU and RTX 3070 GPU. My issue is that it turns on and all seems fine except after a few seconds the fans spin up high and the laptop turns off after 34 seconds.
    I can get into bios and can even boot and login to Windows however after 34 seconds no matter if Im at the bios screen or booted into Windows it will just turn off.

    I have managed to run HWmonitor and the temperatures of the CPU and GPU are fine, I can also touch the heatsync which is warm but not hot.

    I have tried a few new bios but exactly...
    07-14-2024, 11:19 AM
  • tonybig10
    Magnavox MDR515H/F7 And Magnavox MDR537H/F7
    by tonybig10
    Hi is any one can help me on getting the Schematics for Magnavox MDR515H/F7 And Magnavox MDR537H/F7 PDF file thank you I really appreciate it. Just need to change some component on
    the main board and the power supply board. I looked all over for the internet and I cannot find the Schematics sheet for both of them. I don't know where else to look I hope someone can help me...
    03-07-2025, 01:03 PM
  • liquidzorch
    Lenovo 15iml05 Power led lights for 12 seconds then off 12 seconds
    by liquidzorch
    Hello. I bought a faulty Lenovo ideapad 3, but it turns out the 3Valw buck converter burnt a hole through the board. I was able to clean it up, and remove all the shorts. I now can power the 3.3v rails from a bench power suppy while connecting the laptop to its psu, and I get the additional 5valw, 1.8v, and 1.05v, form what I can tell in the schematics, those are the only 4 voltages I should see before turning on, and they are present. When I hit the power button, the power indicator on the left side turns on (not the one on the power button), stays on for about 12 seconds, then turns off for...
    10-18-2024, 05:19 PM
  • Loading...
  • No more items.
Working...