CCFL tester

Collapse
X
 
  • Time
  • Show
Clear All
new posts

Related Topics

Collapse

  • ttmi100x
    HANNSG Hi221 -- 2 secs to black feat. CCFL flicker & "burn" marks on power board
    by ttmi100x
    Greetings everyone,


    I have a HANNSG Hi221 monitor that exhibits two seconds to black issues (backlight goes off, display is still on as confirmed by shining a flashlight on it) with some additional oddities...


    The monitor failed on me with a standard "2 seconds to black" some time ago prompting me to initially replace most of the electrolytic capacitors (some of them were bulging/leaking).
    Things kinda sorta worked for a night, then the problem returned along with some flickering and "buzzing" noises.

    Upon closer inspection...
    07-31-2024, 06:36 PM
  • mikey5791
    Help on Samsung Syncmaster T220 dead ccfl lamp
    by mikey5791
    Hi,

    This monitor previously is my main working monitor which i have been using for 8~9 years. Yesterday, when i switched on my pc from fresh to power on, the monitor is just black no display. I started dismantle to look inside the monitor power board but nothing looks suspicious or burnt. So i took my external ccfl inverter to try to power the monitor ccfl lamps which consisted of 2 lamps on upper part and 2 lamps on the lower part.

    Found out the upper ccfl lamp which is supposed to connect to cn304 on the power board did not light up. Then i installed a used working...
    10-18-2020, 03:17 AM
  • DXseekerMO
    Backlight strip quality, Amazon vs Ebay vs ShopJimmy. Is there really a difference?
    by DXseekerMO
    Hello everyone!

    Recently I've noticed that some ShopJimmy backlight strips don't have double-sided tape installed upon them when an application calls for it, and I must purchase the tape separately. In a recent chat conversation with a customer service agent I told them if this tape wasn't applied when it was called for I would begin to consider ordering my backlight strips elsewhere. It looks like this time may have come.

    I recently got a TCL 65S4 with bad backlights. After looking at the SJ listing here: https://www.shopjimmy.com/tcl-jl-d65...365as-m-led-ba...
    Yes
    0%
    1
    All backlight strips are the same quality
    0%
    1
    No
    0%
    0
    12-16-2021, 03:58 PM
  • Lifeisfun
    Trying to troubleshoot DDR4 SODIMM slot with slot tester
    by Lifeisfun
    Hi folks!
    I have some kind of memory problem on Lenovo laptop. I was initially able to install windows after several tries since the laptop did freeze in middle of those attempts.
    Eventually I discovered that it was related to moving the laptop.
    Later on it even stopped booting unless I pressed around the memory slot. (no keyboard LEDs only power button responds)
    If I remove the RAM I get the beeps that RAM is missing. Inserting the RAM there is silence and it will not boot most of the time. No picture.

    I removed the board got one of those memory slot testers...
    06-04-2025, 02:26 PM
  • spleenharvester
    Reverse engineering of 18650 4-channel tester
    by spleenharvester
    Hi friends

    I have reverse engineered this tester, schematic is attached and is complete except for capacitor values. These testers annoyingly have no model number but they are the ones you find on the first page of just about any website if you type in "18650 4-channel tester". There is also a 2-channel variant and a newer 8-channel variant. They are very cheap (about £15) and can measure voltage, current, internal resistance and capacity. They have a multicolour display for all these statistics. They also have terminal blocks so that if you want to use a breakout board...
    05-04-2025, 02:43 AM
  • Loading...
  • No more items.
Working...