Philips 42FD9944 YSUS Question

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Moreno83
    Badcaps Legend
    • Jun 2014
    • 2008
    • The Netherlands
    #1

    Philips 42FD9944 YSUS Question

    Hi ,

    Could someone please tell me the value of capacitor C148?
    The service manual only shows the parts list for the powersupply.

    On this Ysus board the cap is gone

    Ysus board = NA18106-5009

    Hope that someone can help me , would be really gratefull!!!
    I only repair Panasonic plasma tv's! Currently owning a TX-P55VT50 and still searching for a ZT60!
    Tags: None
    Previous template Next

    Related Topics

    Collapse
    • PlasMatt
      LG 60PV450 Possible Bad YSUS Need help confirming Diagnosis
      by PlasMatt
      I have an LG plasma that after reading through a bunch of posts and doing some testing I believe has a bad YSUS board. The problem is that that doesn't make sense to me for some of the symptoms. The problem started yesterday. While watching a movie the TV just shut down like I pressed power. I have it hooked to a PC and use RS232 to turn it off and on so I thought maybe something had glitched there. I turned it back on and finished the movie with no problems. The same thing happened today so I checked logs to see if something in the control glitched and sent an off command but it didn't, After...
      09-20-2025, 06:50 PM
    • Truncatedhose
      Help repair this relic? Philips 42PF7220A/37, pulsing buzz from YSUS
      by Truncatedhose
      Greetings all!

      Originally this set had the usual messed up video symptoms such as: horizontal lines, weak, grainy video, bottom and top of picture differ in intensity of problem. It also seemed to slow to turn on or show the messed up picture.

      Seemed like must be YScan/buffer board failure. Ordered buffer boards from my distributor which were supposed to be original/new and also from another distributor, I ordered the YSUS because I wanted to replace it for preventative maintenance. (also, the YSUS had a bulged cap, so there was even more reason to suspect it could...
      07-04-2018, 10:59 AM
    • alro7779
      Philips 32PFL4901/F8 BA4GF0F0102 2 Not getting standby led
      by alro7779
      Hello, guys!

      The same 32" Philips TV I was having video issues, but now I don't have standby led at all. Someone here shared with me the schematic of the power supply, and checking the voltages, I see right after the resistor R604 I'm getting 1.6 v which is too low for enabling the Gate of the Q601 mosfet (the diagram says 4.2). On the R614 resistor I'm getting 181 V in and 117 V out, then through R603 I'm getting the same 117 V in and 59.9 V out, finally getting the latter voltage in the R604 BUT getting just 1.6 V out, which is the voltage that goes on to the Gate of the Q601...
      09-14-2025, 12:25 AM
    • G33RT
      Philips 8200 series 65PUS8204/12 stuck at Philips Logo
      by G33RT
      Philips 8200 series 65PUS8204/12 stuck at Philips Logo, it does not reboot it just stays on the logo.

      It does power up when pressing the power button.

      I already try the power button while plugin the plug with no result.
      Also put the latest firmware autorun-TPM191E_R.001.004.100.000.upg on a MBR/FAT32 USB stick at USB port2 with no result either.

      Could this be an PSU or eMMC issue ?
      07-19-2025, 03:43 AM
    • legg
      LG 42PC3 buffer output doesn't follow YSUS
      by legg
      LG42PC3D -UD originally with green lamp but no display or audio.
      Owner says was working, then went 'pop'.
      All 5V caps bulging. replaced.
      All PSU output voltages within spec but -Vy is low on YSUS.
      One of three parallel fets between SUS_OUT and SUS_DN is zenering,
      eventually shorts DG. Replaced all 3 - -Vy now OK.

      Y scan buffer test point does not follow YSUS output below -50V

      Note: This unit seems to expect YSUS output to park at -Vy in between
      drive signal pattern periods. A replacement drive signal board confirms this....
      11-18-2021, 11:49 AM
    • Loading...
    • No more items.
    Working...