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  • Help with this resistor, what is it

    I have this small china tube amp and I was rolling some tubes. Well being a D/A!! I installed the wrong tubes or bad tubes in the power side and burned two resistors Here’s a pic I found of some good ones from someone else who has the same amp and he send me a pic of them. Can someone please help me and tell me what the value is of these two resistors. Sent from my iPhone using Tapatalk

  • #2
    I think metal film 1 % 5 band ......
    Maybe 200 Ohm, but I'm not sure of the colors ....

    https://www.hobby-hour.com/electroni...calculator.php

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    • #3
      Colors on a resistor are very hard to see, without a zoomed in picture with very good lighting. I read those as 2k 1% metal film (Red, Black, Black, Brown, Brown banding)
      Paul

      The "SB's" build page
      http://techtalk.parts-express.com/sh...-4-(pic-heavy)

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      • #4
        I agree with Paul (based on what we can see) on the resistance value and tolerance. Those appear to be decent quality metal film resistors but the lead bend and solder quality look marginal.
        Craig

        The lowest possible F3 box alignment is not always the best alignment.

        Designing and building speaker projects are like playing with adult Lego Blocks for me.

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        • #5
          Maybe I can email these pics to parts express and see what they say and just give it a try Would it be better to start off with a higher value? One other post someone said it looks like a 1k. And I tried looking that up and they don’t really seam to match mine. They all are 4 band not a 5 color band Sent from my iPhone using Tapatalk

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          • #6
            I clicked your link and did some reading So I think I have this right. I hope It is showing a 110ohm Sent from my iPhone using Tapatalk

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            • #7
              I'm voting Red-Blk-Blk-Brn Brn (2kohm) ...

              Nope. "The first stripe is the one that's closest to one end of the resistor."
              Now I think it's 110 ohm. (BOTH are "typical" values - go figure.)

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              • #8
                It would be good if your friend could measure one of the resistors. I tend towards the 110 ohm theory, but a quick ohmmeter measurement will nail it down.
                Francis

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                • #9
                  Won't it be hard to be certain unless its removed from the circuit?

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                  • #10
                    Originally posted by skatz View Post
                    Won't it be hard to be certain unless its removed from the circuit?
                    There should be a noticeable difference between 110 ohms and 2K ohms, at least.
                    Francis

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                    • #11
                      I see the middle band as blue
                      It is estimated that one percent of the general population are psychopaths - New Criminologist: Understanding Psychopaths

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                      • #12
                        What fpitas said, find the same resistor somewhere else in the board and de-solder/measure it. Then you will know for sure.
                        http://techtalk.parts-express.com/fo...khanspires-but
                        http://techtalk.parts-express.com/fo...pico-neo-build
                        http://techtalk.parts-express.com/fo...ensation-build

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                        • #13
                          if I could post my "enhanced color" pic, you'd see there's no blue, just red black black brown brown

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                          • #14
                            I’m just going to order one of those kits with 20 or so different values Sent from my iPhone using Tapatalk

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                            • #15
                              Originally posted by carlthess40 View Post
                              I’m just going to order one of those kits with 20 or so different values Sent from my iPhone using Tapatalk
                              Good idea. Resistance is futile!
                              Francis

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