Generic question

Collapse
X
Collapse
+ More Options
Posts
 
  • Time
  • Show
Clear All
new posts
  • crankn101
    Member
    • Mar 2012
    • 19
    • USA

    #1

    Generic question

    How long will the capacitors in Plasma TVs hold a charge?

    How long will they be dangerous for?

    Ive read everywhere from 5 minutes to 24 hours.

    Ive never mess with buffer boards before so I just want to be sure.

    Thanks Dustin
  • crankn101
    Member
    • Mar 2012
    • 19
    • USA

    #2
    Re: Generic question

    Any place to tie in a light and drain all of the capacitors?

    Comment

    • retiredcaps
      Badcaps Legend
      • Apr 2010
      • 9271

      #3
      Re: Generic question

      Originally posted by crankn101
      How long will the capacitors in Plasma TVs hold a charge?

      How long will they be dangerous for?
      It varies, but in most modern TV's the large capacitor will go to 0V DC in a few minutes.

      If you are unsure, use a multimeter with aligator clips to monitor.

      http://www.repairfaq.org/REPAIR/F_sm...ml#SMPSFAQ_019

      4.6) Safe discharging of capacitors in switchmode power supplies
      --- begin sig file ---

      If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

      We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

      Please do not post inline and offsite as they slow down the loading of pages.

      --- end sig file ---

      Comment

      • Evil Lurker
        Warranty Voider
        • Feb 2011
        • 454

        #4
        Re: Generic question

        Usually nearly every switch mode PSU has at least one or more resistors going across line to neutral and/or across the positive and negative terminals to bleed down the primary high voltage caps to safe levels within less than a minute.

        And when I say usually I mean 99.5% of them.

        Comment

        • crankn101
          Member
          • Mar 2012
          • 19
          • USA

          #5
          Re: Generic question

          Thanks a lot for the info guys. Im just trying to play it safe.

          Comment

          Related Topics

          Collapse

          • szreder6
            HP Pavilion 14-ce0505sa, 5 long 3 short, no display. g7a-2g da0g7ambd1
            by szreder6
            Hello guys,
            I have a problem with my laptop as in the title, black screen, capslock displays error code 5 long 3 short, no voltage on the coils above the CPU, before removing the drive I had 0.8v there, power led flashed 5x long and the battery would not charge (current jumped from 0.5a to 2.8a), now on the power led I have a steady white light or orange when the battery is connected.
            What I did:
            - Laptop was not detecting ram, loose pins on ram slot, error 3.2 disappeared, ram working tested in another laptop

            As far as I know the laptop was in another service center...
            11-22-2024, 05:17 PM
          • howardc64
            A1312 (27” iMac 2009-2011) A1407 (Thunderbolt Display) A1316 (Cinema Display) Display Black Screen Repair
            by howardc64
            Problem

            This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached....
            08-04-2024, 10:36 PM
          • BleedCap
            OLD Socket 478 custom bracket + NEW generic cooler
            by BleedCap
            I already posted this on vogons.
            Its a 3d printed custom bracket for socket 478.
            I used this AM4 bracket as a base design.
            Its to be use with cheap generic clip based cpu cooler.

            Reason for doing this is:
            - Its hard to get/find a good copper base cooler. Even if you find one, the price is ....
            - New generic cooler is cheaper and can use bigger fan (less noise)

            I tested the bracket with cheap chinese horizontal cooler + fan taken from CM hyper 212 evo.
            The processor that I was using is P4 2.4Ghz prescott....
            11-05-2023, 08:09 PM
          • Ferimonka
            HP Envy 15-FH0501sa 3 long 2 short capls lock light
            by Ferimonka
            Hello guys,

            As per title says I have a Envy 15-FH0501sa , Ryzen 5, 16 Gb version.
            Motherboard number is JPB51 LA-M798P rev.1.0
            SN CND3362R3S

            The laptop is getting power and funs stop spinning after few swcconds. It was liquid damaged so we get it to turn on. However 3 long and 2 shor Caps lock lights showing. Power button turns the laptop on but not off.Battery is charging.
            Please help and advice. I attachet the bios dumb in case the bios is the problem.

            Many thanks.​...
            04-29-2025, 02:17 AM
          • Gjackson
            Ps4 Pro long blue light of death
            by Gjackson
            Hi,
            I have an NVA-001 Ps4 Pro with long blue light of death, visual inspection looks fine apart from dust and the very dried thermal paste which I cleaned and replaced, I scoped the board around for any shorts on capacitors and there were none, no blown fuses either. Looking under a thermal camera, southbridge gets warm along with APU and phases for the APU. I cannot tell if RAM is too cold? maybe not powered? but RAM chips are all the same temperatures. At this point I removed NOR and enabled UART to diagnose further. The only thing I get from UART is this following message:
            ...
            08-21-2023, 02:41 PM
          • Loading...
          • No more items.
          Working...