Phillips 170B Screen goes Blank after 1-2 seconds

Collapse
X
Collapse
+ More Options
Posts
 
  • Page of 2
  • Time
  • Show
Clear All
new posts
Previous 1 2 template Next
  • selldoor
    Slow Learner
    • Dec 2010
    • 7870
    #21
    Re: Phillips 170B Screen goes Blank after 1-2 seconds

    Originally posted by thestigp11gt
    New tester arrived today, went though what that video did, but the inverters are fine, I have continuity though both of them
    Continuity is not a sufficient test.
    You need to measure the resistance of the secondary coil in each inverter transformer and they need to be within 3% of each other.
    Post your results and someone will advise if ok.
    Please upload pictures using attachment function when ask for help on the repair
    http://www.badcaps.net/forum/showthread.php?t=39740

      Comment

      Previous 1 2 template Next

      Related Topics

      Collapse
      • 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
      • hasel17
        CH341a can erase and read but can't write and blank check
        by hasel17
        So I am trying to repair broken thunderbolt FW on X1 Yoga Gen 2. The EEPROM chip is WINBOND 25Q80DVNIG. I already do a back-up and erase. But when I try to wrote new FW, it was successfull, but when I tried to read it, it still blank. when I try to do a blank check, it gave me instant error in address 0. I already tried two CH341A, already did the 3.3v fix mod, using AsProgrammer, NeoProgrammer, Colibri, and CH341A 1.29. But the problem still occurred. What I did wrong here? Can anyone help me? Thanks in advance. Here is the log in Colibri :

        Code:
        Checking for blank...
(Press
        ...
        10-26-2023, 06:20 AM
      • 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
      • Rick_1234
        LG 23MP55HQ LED Monitor turns off after a few seconds or flickers.
        by Rick_1234
        Good evening, gentlemen.

        I have a problem with my monitor. It turns off after a few seconds or flickers. Shining a flashlight on the screen doesn't show any image, so I guess it's not the "2 seconds to dark" I read in the forum.

        To turn it back on, I have to press the power button twice. Then after a few seconds it turns off again or flickers. See video.
        https://drive.google.com/file/d/1L6S...ew?usp=sharing


        Things I tried

        - Bought a new AC adapter thinking that was the problem but the problem...
        06-22-2024, 04:44 PM
      • PowellSkier
        Harman/Kardon AVR 645 returning to stand-by after a few seconds.
        by PowellSkier
        A Harman/Kardon AVR 645 repair has been a hobby of mine for the past several years. My latest attempt involved the purchase of a DOA unit for part swapping and testing. The original AVR would power up then shut down after a few seconds. I completely tore down both units, found a couple of bad components and reassembled one of them. Same issue, no speakers connected. After extensive research I found a repair document from Harman/Kardon that explains the protection circuit in fantastic detail and provides specific test points for each fault (power, DC detection, overload & power) and the voltage...
        06-17-2024, 11:43 AM
      • Loading...
      • No more items.
      Working...