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thespeakerport
Member
Last Activity: 03-28-2016, 10:16 PM
Joined: 03-10-2016
Location: Joliet, IL
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  • thespeakerport
    replied to Help differentiating/identifying capacitor types
    in Troubleshooting Audio Equipment
    Re: Help differentiating/identifying capacitor types



    I have no hard evidence to back this up, but I would expect that every manufacture does something a little different than the other for a given series of caps. The way they behave in given application should be consistent (IMHO) and I really don't know if this 'behavior' can be guaranteed by mixing different makes/models. Maybe, may be not. Maybe the differences are so negligible that it is a waste of time to even talk about. ...
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  • thespeakerport
    replied to Re-capping CD Players...
    in Troubleshooting Audio Equipment
    Re: Re-capping CD Players...

    Yeah....kind of figured. Mouser...here I come!
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  • thespeakerport
    started a topic Recommended Capacitor Tester
    in Equipment Usage, Soldering, Techniques, and Reviews

    Recommended Capacitor Tester

    Hello all...

    Was hoping someone could make some suggestions for good, reliable capacitor tester. Is there one out there that can accurately test and provide information about a capacitor such as (capacitance (duh), ESR, Impedance, leakage, etc.) In a different thread, I voiced concern about not being able to accurately identify what specs an old/vintage capacitor had. It occurred to me that if I had a way to comprehensively test an 'original'; identifying the replacement would be cake walk. (I found and bought a few 'general' testers out on eBay and they work OK to provide basic...
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  • thespeakerport
    started a topic Re-capping CD Players...
    in Troubleshooting Audio Equipment

    Re-capping CD Players...

    I have been struggling with a decision about whether or not to re-cap a particular CD player. This started as a repair I got in for a mid-80's Kenwood DP-850 CD Player that had a display problem. Ended up being a shorted cap that was pulling down supply voltage to the VFD display. This unit has a good number of caps in it (as do many other players of it's age.) I have to believe that no matter the device, if it has an electrolytic cap in it, it is going to break down/degrade. Furthermore, I expect it will take the quality of sound with it as well (irrespective if it is a device generating signal...
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  • thespeakerport
    replied to Help differentiating/identifying capacitor types
    in Troubleshooting Audio Equipment
    Re: Help differentiating/identifying capacitor types

    No, definitely not looking to go nuts on this. I have gravitated to Nichicon's not because I think they are the best; I have been using them because (at least with the KT series), they were really well priced (from Mouser) and they had the most combinations of capacities and voltages for my needs. If at all possible, I wanted to avoid having different brands/series of caps in a single system unless it was absolutely necessary. In some situations, that is not possible or potentially not wanted...but I have not come across any of...
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  • thespeakerport
    replied to Help differentiating/identifying capacitor types
    in Troubleshooting Audio Equipment
    Re: Help differentiating/identifying capacitor types




    This certainly makes sense to me. That you guys so much for the candid information. I shall move on and continue this restoration....
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  • thespeakerport
    replied to Help differentiating/identifying capacitor types
    in Troubleshooting Audio Equipment
    Re: Help differentiating/identifying capacitor types

    Appreciate the straight talk....So do you think I would be ok to use Nichicon's UKT's (that I already have) for everything and UKL's for the low leakage?

    Regarding UKT's....it is not Nichicon's best. Problem I have is that their top of the line UKZ does not have all the capacitance values I will need for restorations however, the UFG/UKW and UFW's do to a certain degree. Would you recommend one of these over the KT's for 'general purpose', no low-leakage applications?
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  • thespeakerport
    replied to Help differentiating/identifying capacitor types
    in Troubleshooting Audio Equipment
    Re: Help differentiating/identifying capacitor types



    Thanks Khron....these look to be some outstanding educational video. They are long and would take some time to pull out the necessary information and apply it to my situation. In any case, thanks for bringing these to my attention....
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  • thespeakerport
    replied to Help differentiating/identifying capacitor types
    in Troubleshooting Audio Equipment
    Re: Help differentiating/identifying capacitor types



    Thanks Budm....in fact, I did come across these two sites but unfortunately, they really don't answer my question. What it does give is a really good overview of tests and perspectives given a particular set of caps that I do not have. Again, perhaps I am making this more complicated that I should, but I have to believe the manufacturer used different type of caps in these units for a reason. Or maybe they just pulled parts out of their back side because that is what they had available at the time. In any case,...
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  • thespeakerport
    replied to Help differentiating/identifying capacitor types
    in Troubleshooting Audio Equipment
    Re: Help differentiating/identifying capacitor types

    Ok...so I went through and broke these down by brand/series as best I could.

    Orange caps: stamping: ELNA CERB (85 degree) 7D (U) ....these are for sure low leakage as I have identified the same ones used in a JVC receiver where they specifically called them out as L.L.

    Light Blue: Matsushita/Panasonic CE -40~+85 degree....have no idea what a CE series is and have spent the morning trying to find out with no apparent luck.

    Dark Blue: ELNA CEW (or CE-W...not sure) 85 degree; no other stamping...Other...
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  • thespeakerport
    replied to Help differentiating/identifying capacitor types
    in Troubleshooting Audio Equipment
    Re: Help differentiating/identifying capacitor types

    Here are some photos of what I am looking at. You see that there are a number of el caps that are of unique color. There are some (gray and blue) that have the exact same value (1uf, 50V, 85degree). Sigh......
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  • thespeakerport
    replied to Help differentiating/identifying capacitor types
    in Troubleshooting Audio Equipment
    Re: Help differentiating/identifying capacitor types

    Also...I have seen many posts suggest that a Low ESR cap is the same as Low Impedance. Yes, no...maybe?
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  • thespeakerport
    replied to Help differentiating/identifying capacitor types
    in Troubleshooting Audio Equipment
    Re: Help differentiating/identifying capacitor types

    Thanks guys...I really wish these service manuals were more complete. I am a big fan of Nichicon and Mouser is the Mecca for these parts. Thanks for the replacement part numbers on those transistors. I was not planning on messing with semiconductors on this particular unit, but they are cheap enough to replace so I will look for them and replace them accordingly. I will look into the PW and KL series Nichicon cap on Mouser's site; personally, I have chosen the KT's and KW's as they seem to have a very wide range of values in the...
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  • thespeakerport
    started a topic Help differentiating/identifying capacitor types
    in Troubleshooting Audio Equipment

    Help differentiating/identifying capacitor types

    Hello Badcaps community...

    This is my first post; hope I am dropping it in the right area. I apologies for being a bit long winded, but I am not sure how to go about explaining this any better....

    I have started a audio repair/restoration side business and frequently, I am running into an issue I am not sure how to resolve. When working on older stereo receivers, the original service manuals do not always tell you what specific types of capacitors are used . For instance, I have a Yamaha CR-420 I am working on now. The majority of the electrolytic caps are one color...
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  • thespeakerport
    replied to New Members - please post your introductions here
    in Announcements & Related News
    Re: New Members - please post your introductions here

    Hello all. Just joined as a new member. My name is Nabeel and I live outside of Chicago in Joliet, IL. Married with a couple kids. I got my electrical engineering degree from Michigan State University in 1996. Like most people in my class, I went into a line of work that had nothing to do with my degree...IT. In fact, I am still doing IT today. My day job is a Manager of a datacenter engineering team for a Insurance software automation and management firm. I have always kept my true engineering side going with hands on repair...
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