Sorry if this was already asked... newbie question about the types of capacitors

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • petitsourice
    New Member
    • Nov 2010
    • 2
    #1

    Sorry if this was already asked... newbie question about the types of capacitors

    First of all -THANKS TO EVERYONE here. Nice of all of you to fight the insanity of multi-hundreds of bucks to fix things. Like paying $800-$2000 for a new TV when all you need to do is replace the capacitors on the power supply.

    That is where I am. I found references to the model TV I have (a PolaROID - as in hemmeroid). It ran fine, and many on the net have reported the same problems -- the display dims from some lights not coming on, then goes black. The problem takes a few days to weeks to go completely bad.

    So, I found this site. I am a network engineer though, not an electronics engineer. So I know capacitors discharge like so and that once i got a frog's (Gastroc nemus?) nerve to fire like a capacitor in a lab but that's it.

    I have a handfull of obviously bad caps (the top is bulged). I am trying to replace them but going online I see lots of options. One is a Samxon 220uF 450V HP (M) 105 C capacitor. I can find lots of 220uF 450V caps out there. But no "HM (M)" ones. I noticed on this site's FAQ that there are some different types, ie:

    Nichicon : PM , PW , HE , HD , HV , HM , HN , HZ
    http://www.nichicon.co.jp

    So, after this typical Generation X diatribe, my question is can I just replace this Power supply cap (Samxon 220uF 450V) with any 220uF 450V capacitor? The next question is SHOULD I replace it with the same brand and what not.
    Tags: None
    • Dgtech
      E. Technician
      • Apr 2009
      • 1462
      • Steeler
      #2
      Re: Sorry if this was already asked... newbie question about the types of capacitors

      Some here will get very scientific about what caps to put in. I dont. I just stay away from the usual failure caps like capxon and go with it. Nichicon's work well for me. I do suggest only 105 degree caps.
      The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS

        Comment

        • Th3_uN1Qu3
          Believe in
          • Jul 2010
          • 6031
          • Romania
          #3
          Re: Sorry if this was already asked... newbie question about the types of capacitors

          Yes you can change it with whatever you like. The main filter cap isn't too critical anyway - just use a 105C cap and it'll be fine.

          Long version: Get datasheets and compare ESR and ripple current ratings - the replacements need to have at least the same rating or higher. However when you can't find datasheets, you just drop in whatever you have around and if it works you're good.
          Originally posted by PeteS in CA
          Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
          A working TV? How boring!

            Comment

            • PCBONEZ
              Grumpy Old Fart
              • Aug 2005
              • 10661
              • USA
              #4
              Re: Sorry if this was already asked... newbie question about the types of capacitors

              Originally posted by petitsourice
              First of all -THANKS TO EVERYONE here. Nice of all of you to fight the insanity of multi-hundreds of bucks to fix things. Like paying $800-$2000 for a new TV when all you need to do is replace the capacitors on the power supply.

              That is where I am. I found references to the model TV I have (a PolaROID - as in hemmeroid). It ran fine, and many on the net have reported the same problems -- the display dims from some lights not coming on, then goes black. The problem takes a few days to weeks to go completely bad.

              So, I found this site. I am a network engineer though, not an electronics engineer. So I know capacitors discharge like so and that once i got a frog's (Gastroc nemus?) nerve to fire like a capacitor in a lab but that's it.

              I have a handfull of obviously bad caps (the top is bulged). I am trying to replace them but going online I see lots of options. One is a Samxon 220uF 450V HP (M) 105 C capacitor. I can find lots of 220uF 450V caps out there. But no "HM (M)" ones. I noticed on this site's FAQ that there are some different types, ie:

              Nichicon : PM , PW , HE , HD , HV , HM , HN , HZ
              http://www.nichicon.co.jp

              So, after this typical Generation X diatribe, my question is can I just replace this Power supply cap (Samxon 220uF 450V) with any 220uF 450V capacitor? The next question is SHOULD I replace it with the same brand and what not.
              You're little list here:
              Nichicon : PM , PW , HE , HD , HV , HM , HN , HZ
              are all low ESR caps.
              You don't need a low ESR cap for the maind filter cap.
              Choose one with the right uF and volts with the best [highest] Ripple rating.

              The Ripple rating is effectively it's current rating.
              Tells you how much Ripple current it can handle without overheating.
              Higher Ripple number => more heavy duty.
              .
              Mann-Made Global Warming.
              - We should be more concerned about the Intellectual Climate.
              -
              Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
              - Dr Seuss
              -
              You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
              -

                Comment

                • petitsourice
                  New Member
                  • Nov 2010
                  • 2
                  #5
                  Re: Sorry if this was already asked... newbie question about the types of capacitors

                  many thanks, guys. I am ordering them up now.

                    Comment

                    Previous template Next

                    Related Topics

                    Collapse
                    • Mark R
                      Equipment Display Types
                      by Mark R
                      Most Displays I have worked with are of course LCD Or Blueish Fluorescent Types. I Have a Marantz PMD800 tuner with sort of a white display. The display area is a sealed rectangular shape in a Glass Case. Looks like some sort L.E.D. display only not your typical section number type. I picked up this Tuner cheap as the display is very Dim. In front of the circuit is a dull red Plastic lens.

                      The display is very week and hard to see. I've got my DC 5 Volts allover and also a DC 32 Volt that runs some other section. Power supply looks good front to back. Not familiar with this type...
                      06-07-2024, 07:19 PM
                    • Phil289
                      samsung LE32A558p3f bn44-00208a
                      by Phil289
                      Hi
                      Could someone tell me the differance between the 2 types of caps in the attachment - i have repaired the power supply board by replacing 6 caps and tv is now working but it has a low level buzz/whistle which can't be heard when tv is being used normally but can be heard slightly when theres nothing going on on screen.
                      In the kit i recieved it had all 3 of the 25v 1000uf the same as the smaller caps in the picture and the taller one was not included - when i asked i was told it would be ok to use the ones supplied.
                      I've checked online and all these boards appear to definately...
                      11-19-2021, 02:54 PM
                    • dbuergi
                      DIY: Modified smart charger for all types of batteries
                      by dbuergi
                      Hi all,

                      sometimes i'm in need of a charger / tester for very small batteries and even if my multimeter doesn't show anything there is a chance that a smart charger helps to revieve. I'm happy with my Keenstone smartcharger and i made a small mod just to use it with smaller batteries like in smartwatches or even camera batteries with special contacts.

                      Soldering wires on the charger contacts and using needles as probes. I covered both with a shrink hose with integrated solder.
                      My first work was to bring my Samsung watch battery back to life with was not recognized...
                      Today, 03:17 AM
                    • Alfieh
                      NAD C320BEE repair possibly bad capacitors
                      by Alfieh
                      hey Im very new to repairing electronics with capacitors as well as using a multimeter so I need so help/guidance fixing this issue

                      recently I was handed a family members old NAD C320BEE that they had in their loft for storage for a few years but when powered on it went into power safety mode due to a problem on the protection circuit somewhere before it went into storage I was told it worked fine I found lots of people online talking about how the capasitors are known to be pretty bad in this model and can cause this issue the only problem being I don't have much experience sorting...
                      11-19-2024, 04:55 PM
                    • tranquility
                      newbie needs capacitor sizes. HP Spectre X360. schematic maybe available
                      by tranquility
                      hello, i am very new to laptop repair and generell electronics

                      i have a HP Spectre X360 Convertible 13 - ap0016ng
                      motherboard number DA0X36MBAE0 REV E

                      massive burned and shortet mosfets. after removing them still shortet in the i think "main power rail"

                      found a shorted capacitor. removed it and the short is gone.

                      i want to try a crazy repair which is hard because the mosfets are like welded on one side to the track. is there a method to get this loose ?

                      in this area another capacitor was shortet.

                      ...
                      12-06-2024, 04:12 AM
                    • Loading...
                    • No more items.
                    Working...