Announcement

Collapse
No announcement yet.

Help with a Strange Resistor please!

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    Help with a Strange Resistor please!

    Wonder if anyone can help me. im just looking to read the value of this resistor that popped on a board. thing is, no matter what calculator i do online the colours dont seem to match?! I get Red, yellow, (nearest i can do now is grey though it looks silver) Gold, Then the last colour is white? white doesnt exist in the last code for tolerance? anyone able to offer an insight please? pic attached!

    many thanks to anyone that offers some help in advance!
    Attached Files
    Tags: None
    #2
    Re: Help with a Strange Resistor please!

    This might help you with this question

    https://www.utmel.com/tools/band-res...lculator?id=20

    White is your first color and red is your last color
    Last edited by sam_sam_sam; 02-03-2023, 06:39 AM.
    9 PC LCD Monitor
    6 LCD Flat Screen TV
    30 Desk Top Switching Power Supply
    10 Battery Charger Switching Power Supply for Power Tool
    6 18v Lithium Battery Power Boards for Tool Battery Packs
    1 XBox 360 Switching Power Supply and M Board
    25 Servo Drives 220/460 3 Phase
    6 De-soldering Station Switching Power Supply 1 Power Supply
    1 Dell Mother Board
    15 Computer Power Supply
    1 HP Printer Supply & Control Board * lighting finished it *


    These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

    1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
    2 Hem Saw Computer Stack Board

    All of these had CAPs POOF
    All of the mosfet that are taken out by bad caps

    Comment

      #3
      Re: Help with a Strange Resistor please!

      cheers sam, but thats what i was saying - i have went to 4 pages like that with colour calculators, and if you actually try and punch in the colours from that resistor they dont match up. ie, its a 5 band and when you get to the Tolerance or last band the colour isnt available. the one in my hand there is white'ish but there is no white for tolerance. also - band 3 the closest you can select is Grey, but in reality it looks very much like silver!?

      not sure if im making this any clearer or worse!

      thanks

      Comment

        #4
        Re: Help with a Strange Resistor please!

        wait - your saying white is first? ahhh.. let me rewind...

        so if white is my first, then gold would be second, and again there is no gold selection for those calculators!

        Comment

          #5
          Re: Help with a Strange Resistor please!

          I tried to do it as well and have a problem with the the gold band and it only has gold band if you start with red but there is no white band for the last band so I am confused about this maybe someone else can help you with this

          Can get a resistance value from the resistor that you are showing
          Last edited by sam_sam_sam; 02-03-2023, 06:58 AM.
          9 PC LCD Monitor
          6 LCD Flat Screen TV
          30 Desk Top Switching Power Supply
          10 Battery Charger Switching Power Supply for Power Tool
          6 18v Lithium Battery Power Boards for Tool Battery Packs
          1 XBox 360 Switching Power Supply and M Board
          25 Servo Drives 220/460 3 Phase
          6 De-soldering Station Switching Power Supply 1 Power Supply
          1 Dell Mother Board
          15 Computer Power Supply
          1 HP Printer Supply & Control Board * lighting finished it *


          These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

          1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
          2 Hem Saw Computer Stack Board

          All of these had CAPs POOF
          All of the mosfet that are taken out by bad caps

          Comment

            #6
            Re: Help with a Strange Resistor please!

            its weird. i have never had this issue before. its usually pretty straight forward! im glad im not the only one! thanks.

            Comment

              #7
              Re: Help with a Strange Resistor please!

              Originally posted by Raulman View Post
              its weird. i have never had this issue before. its usually pretty straight forward! im glad im not the only one! thanks.
              Just wait maybe someone else might have run into this issue and might have answer this questions

              Have you checked it with an ohm meter yet
              9 PC LCD Monitor
              6 LCD Flat Screen TV
              30 Desk Top Switching Power Supply
              10 Battery Charger Switching Power Supply for Power Tool
              6 18v Lithium Battery Power Boards for Tool Battery Packs
              1 XBox 360 Switching Power Supply and M Board
              25 Servo Drives 220/460 3 Phase
              6 De-soldering Station Switching Power Supply 1 Power Supply
              1 Dell Mother Board
              15 Computer Power Supply
              1 HP Printer Supply & Control Board * lighting finished it *


              These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

              1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
              2 Hem Saw Computer Stack Board

              All of these had CAPs POOF
              All of the mosfet that are taken out by bad caps

              Comment

                #8
                Re: Help with a Strange Resistor please!

                Try this chart

                https://learnabout-electronics.org/a...nductors04.php
                9 PC LCD Monitor
                6 LCD Flat Screen TV
                30 Desk Top Switching Power Supply
                10 Battery Charger Switching Power Supply for Power Tool
                6 18v Lithium Battery Power Boards for Tool Battery Packs
                1 XBox 360 Switching Power Supply and M Board
                25 Servo Drives 220/460 3 Phase
                6 De-soldering Station Switching Power Supply 1 Power Supply
                1 Dell Mother Board
                15 Computer Power Supply
                1 HP Printer Supply & Control Board * lighting finished it *


                These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

                1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
                2 Hem Saw Computer Stack Board

                All of these had CAPs POOF
                All of the mosfet that are taken out by bad caps

                Comment

                  #9
                  Re: Help with a Strange Resistor please!

                  cheers, ill have a read at this. yeah i tested it with my multimeter but its totally burst. there are actually charred burns on the other side of it not in that pic, so i cant get a reading. frustrating!

                  Comment

                    #10
                    Re: Help with a Strange Resistor please!

                    The white band is throwing me off and I can not find anything about the double wide band
                    9 PC LCD Monitor
                    6 LCD Flat Screen TV
                    30 Desk Top Switching Power Supply
                    10 Battery Charger Switching Power Supply for Power Tool
                    6 18v Lithium Battery Power Boards for Tool Battery Packs
                    1 XBox 360 Switching Power Supply and M Board
                    25 Servo Drives 220/460 3 Phase
                    6 De-soldering Station Switching Power Supply 1 Power Supply
                    1 Dell Mother Board
                    15 Computer Power Supply
                    1 HP Printer Supply & Control Board * lighting finished it *


                    These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

                    1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
                    2 Hem Saw Computer Stack Board

                    All of these had CAPs POOF
                    All of the mosfet that are taken out by bad caps

                    Comment

                      #11
                      Re: Help with a Strange Resistor please!

                      It's a 0.24 Ohms 1w , tolerance 5% .. The white band could be its low induction sign or flame proof .

                      Comment

                        #12
                        Re: Help with a Strange Resistor please!

                        im reading forums where people are having the same issue and they are saying its not a 5 band, but a 4 band with the 5th just being a tolerance band. that would make it 0.24 Ohms... it does marry up with the colour calculators though im not 100%...

                        Comment

                          #13
                          Re: Help with a Strange Resistor please!

                          Originally posted by jiroy View Post
                          It's a 0.24 Ohms 1w , tolerance 5% .. The white band could be its low induction sign or flame proof .
                          Beat me to it Jiroy! this is starting to make sense!

                          Comment

                            #14
                            Re: Help with a Strange Resistor please!

                            Originally posted by Raulman View Post
                            Beat me to it Jiroy! this is starting to make sense!
                            Indeed but this is no regular resistance .. Yes it's 0.24 Ohms , but it's special one no doubt . I tend to assume it's for protection .

                            Comment

                              #15
                              Re: Help with a Strange Resistor please!

                              Similar one , but 0.47 ohms from my backups ..
                              Attached Files

                              Comment

                                #16
                                Re: Help with a Strange Resistor please!

                                yeah, i have ordered another one. i just checked the resistor next to it, and its dead too! same kind of resistor but 0.33Ohms. i did recap this board recently but i capped it like for like, and i spent extra money on nichicon caps. annoying!

                                thanks for help and feedback folks, very much appreciated!

                                Comment

                                  #17
                                  Re: Help with a Strange Resistor please!

                                  Good luck Raulman !!

                                  Comment

                                    #18
                                    Re: Help with a Strange Resistor please!

                                    Hi

                                    This looks to me like a MILL Standard Resister
                                    If so its a 4 band resister.
                                    the 5th band just means "military Solderable leads"

                                    Band 1 Red 2
                                    Band 2 Yellow 4
                                    Band 3 Silver X0.01 Multiplier
                                    Band 4 Gold 5% tolerance

                                    0.24 ohms @ 5%

                                    hope this helps

                                    Comment

                                      #19
                                      Re: Help with a Strange Resistor please!

                                      The last white band means Fusible

                                      Comment

                                      Previous template Next
                                      Working...
                                      X