vestel 17pw26-4 weired fault,help

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • promo7uk
    Member
    • Aug 2014
    • 31
    • uk
    #1

    vestel 17pw26-4 weired fault,help

    im a tv engineer and i cannot for the life of me find this sodding fault.

    i have a vestel 17pw26-4 from a jvc 32" tv,

    i have replaced q813 , q814 + fan 7711 chips. now psu works but,, drop a load onto it voltages drop.. all of them 3.3v 12v 24v , every single voltage slowley drops.. anyone had same problem and manage to fix please let me know for furture ref as its piddling me off, cheers
    Last edited by promo7uk; 08-15-2014, 04:55 AM.
    Tags: None
    • senndogg
      Badcaps Veteran
      • Dec 2011
      • 383
      • Albania
      #2
      Re: vestel 17pw26-4 weired fault,help

      does the standby voltage drop too? can you check the voltage in the 22/33uf 35/50V small cap in the primary side?

        Comment

        • ReeceyBurger123
          Never Give Up !
          • May 2014
          • 7325
          • Britain
          #3
          Re: vestel 17pw26-4 weired fault,help

          I hate vestel boards especially the 17pw20-26 models when ever you fix one problem another occurs, its probably cheaper to replace the board (parts and time wise). I have seen the output voltage drop due to bad pfc try checking the voltage on the main filter capacitor should be around 385v while on if its lower than that check the pfc. I had a 17pw26-4 that had voltage dropping issues on the output and it turned out to be the pfc the main cap was only getting 330v dc it turned out to be the pfc, I ordered parts from http://sparedparts.com/parts/manufac...ory/vestel/P29
          Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

          https://www.facebook.com/Telford-Tel...7894576335359/

            Comment

            Previous template Next

            Related Topics

            Collapse
            • France_53
              Vestel tv, how to flip the image?
              by France_53
              Hello everyone from Italy, I'm here to ask for help on a Vestel TV, I've had a Vestel TV branded "XD" with a broken screen for years, but now I've found a Telefunken (still Vestel but older) and I've mounted the panel on the "XD" TV, it works, but the screen is upside down, given that Vestel does not allow you to rotate the image from the service menu, does anyone know how to solve the problem? the original panel is marked ves315WNDS-2D-N12 while the main board 17mb110, the panel I mounted instead in the tv (from the telefunken) is a ves315WNDA-02. ... It is not worth repairing...
              05-12-2024, 05:22 AM
            • FlailingEngineer
              Help with Bush Tv (Vestel 17mb95m Mainboard)
              by FlailingEngineer
              Hi, I was recently given a Bush Smart TV by a friend and the main board seems to be hanging on by a thread.

              Before we get to that, my first obstacle was figuring out the model number since the back sticker has gone for a walk. Upon taking off the back case, I noticed the following Vestel parts, 17MB95m mainboard, 17IPS71 (what I'd assume is power supply) and a VES420UNVL-3D-S02 display panel. After doing some research I think the TV I have is a Bush ELED42240FHDCNTD3D, based on the matching image here (https://www.manualslib.com/manual/11...td3d.html#manu...
              05-31-2023, 06:52 AM
            • massimomax
              Firmware TV Hitachi 32HE4500 scheda madre Vestel 17MB211S matrice: VES315UNVL-2D-N11
              by massimomax
              Chiedo aiuto per problema a TV Hitachi 32HE4500 che non si accende più,ho bisogno del firmware della scheda madre vestel 17MB211S codice pannello VES315UNVL-2D-N11 ?
              spero che qualcuno può averlo per riprogrammare eprom. grazie

              Post in English !!!

              I ask for help with a problem with a Hitachi 32HE4500 TV that no longer turns on, do I need the firmware for the Vestel 17MB211S motherboard, panel code VES315UNVL-2D-N11? I hope someone can have it to reprogram eprom. Thank you


              ​
              02-28-2025, 07:27 AM
            • abajor
              A2251 L8100 Diode Drop .009V Resistance 2.6Ohm
              by abajor
              Trouble shooting an A2251, it is giving me the behavior that all three USB jacks except the DFU port are reading 5.18V .24A, the DFU port draws no current.

              Tried swapping that CD3217 from a donor, that changed to DFU port same behavior the adjacent USB port is now boot cycling, other side un effected.

              Hindsight probably should have checked the diode drops first.

              I removed L8100 to confirm that the PP1v1_S3 rail was "shorted" It reads about 2.4ohm and .009V on diode drop. The HighSide Low Side FETS before L8100 appear to be fine. Proper diode...
              01-18-2025, 04:38 PM
            • battery.12v
              Asus G512LI VCCCore raise and drop
              by battery.12v
              Hello guys, Asus G512LI, came with 3.3V drop down immediately .... 5V was stable ... after search and work found that +3VSUS_MUX is the issue (caused by U4701A TUSB1146RNQR) , left off the ic .. 3.3V came up again stable ... after power on laptop turn on for 3 seconds and power off ... VCCcore raise 0.9V for 1.5 seconds and drop down all other voltages do same thing ... Ram voltage , Gpu voltages, concerning VCCGT 0V all the time
              05-03-2024, 03:43 AM
            • Loading...
            • No more items.
            Working...