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    #1

    CDROM Drive bad cap?

    220uf 16v bulged. This cap has a diamond logo with BH inside. All other caps are Tayeh and look fine. I was under the impression all caps 470uf and under aren't prone to the plague.

    The drive is a Creative Labs CD5230E.
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    #2
    Re: CDROM Drive bad cap?

    Crap everywhere...

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      #3
      Re: CDROM Drive bad cap?

      Originally posted by Mustang
      220uf 16v bulged. This cap has a diamond logo with BH inside. All other caps are Tayeh and look fine. I was under the impression all caps 470uf and under aren't prone to the plague.

      The drive is a Creative Labs CD5230E.
      They just haven't been observed to have failed much, because most of the load on motherboards and power supplies is carried by higher value caps (1000uF and up). There are several posts relating problems with Choyo 330uF caps. I have an audio card (Creative Labs SoundBlaster PCI512) that I need to recap that appears to have bad Jamicon and WinCap caps, values between 4.7uF and 100uF. No visible leakage or bulging, but several are pushed up off the board 1 or 2 mm.

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        #4
        Re: CDROM Drive bad cap?

        I've seen bad caps on soundcards (GSC mostly) as small as 100 uF. The bulge may not be obvious, but there'll be a small discoloration at the center of the non-vented caps. I've also seen visibly bulged and vented 470 uF caps (again on soundcards - maybe the speaker cables shorted).

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          #5
          Re: CDROM Drive bad cap?

          BTW, Tayeh are also crap - they usually fail quietly without bulging and venting, similar to Choyo and G-Luxon. It may not be an issue in a CDROM drive, but the motor drive circuit takes a fair amount of current during spin-up.

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            #6
            Re: CDROM Drive bad cap?

            This was on the first BE6-II that I recapped. It's running a 700MHz (100MHz FSB) P3. Just to see if it would work, I bumped the FSB to 133MHz. The PC booted just fine, but couldn't find the sound card (AGP video, HD, keyboard, mouse, ISA fax/modem all OK). So, I put the FSB back to 100MHz. The PC would sometimes detect the sound card, usually not. Got another sound card to replace it, which made my 7-year-old happy (it's his computer).

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              #7
              Re: CDROM Drive bad cap?

              that is remarkable, thanks for posting indeed. is the cap causing any issue with the drive?
              capacitor lab yachtmati techmati

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                #8
                Re: CDROM Drive bad cap?

                >[Tayeh] usually fail quietly without bulging and venting
                I have 2 1500@6,3 Tayeh on Soyo Super 7 board bulging.
                The great capacitor showdown!

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                  #9
                  Re: CDROM Drive bad cap?

                  Originally posted by willawake
                  that is remarkable, thanks for posting indeed. is the cap causing any issue with the drive?
                  The drive has been running fine. I took it apart for a cleanup before sending it off to a nephew's pc. Been debating whether it's even worth the expense of a recap or just let it c(r)ap out on it's own. The closest value caps here are either 470uf 10v or a 1000uf 16v.

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                    #10
                    Re: CDROM Drive bad cap?

                    This "BH" capacitor is Bor Hurng. This capacitor failure was most likely to be caused by a power supply with inadequately rated electrolytic capacitors on the output side, so the capacitor on the CD-ROM drive had to work harder...
                    My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics.

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                      #11
                      Re: CDROM Drive bad cap?

                      That would have been one of my Antec's. Not sure which one but they all had bad caps. Interesting how 1 bad component can really wreak havoc on the rest of the system.

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                        #12
                        Re: CDROM Drive bad cap?

                        i need u help can u tell me how i repair cd rom

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