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dolbyscat

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Posts posted by dolbyscat

    power supply repair??

    in Technical/Restorations

    Posted

    The psu in question output is +18v & -18v, 1 amp, for a Klipsch iGroove, unfortunately they are no longer available, hence the attempt to repair. It of course also has a proprietory 4 pin plug in connector.....:( .

    DJK is right - just replace it with a linear. Sure, your connector is not a simple two pin, because the device needs pos and neg supply. But you can remove the power cable from this PSU and use it on a new linear supply. I suspect the connections would be +V and -V and GND with the last one unused. I couldn't see where the cord enters the PSU, but that should not be hard to get clear. Ask Klipsch for the schematic, or to tell you which wire is which.

    As an example, you can use something like THIS by adding a small line transformer to get the ~32V input.

    EDIT: This is a bit of overkill, but gives you some idea of what to look for in a transformer. It's also pricey at $17. But, use it as an example.

    http://www.alliedelec.com/search/productdetail.aspx?SKU=70218222#tab=specs

    So, for around $45 at the top end, you could have a new linear supply.

    Thanks "mdeneen" and everyone else for the input regarding my lack of output, I think the new linear supply looks the way to go after a little research of my own. Now I know this might seem sacriligeous...but... I have another i-Pod dock where the psu is ok but the dock itself is toast...the problem??.....It bears the name B@$e....lol...It also bears the same model # and seems to be identical except for the four pin plug...Funnily enough it was my wife who reminded me she still had this unit, it never even crossed my mind.

    IGroove HG power supply

    in Personal Music Systems

    Posted

    I have already opened mine and there is no evidence visually of anything wrong. I have no skills in faultfinding so the PSU is heading for the bin. I will keep the plug that fits the speakers just in case there is SOMEONE on this site that can give me the pinout! Failing that I have a variable PSU and will take a guess with the likely outcome of knackering the speakers!

    Ok, keep me up-dated, did you see that I did start a discussion on a possible repair in the technical section of this forum, no definite outcome yet but some helpful suggestions, maybe you could chime in with any knowledge you may have. Seems there was a known problem with these psu's, and your right there is no evidence of anything being wrong, which makes the fault finding all the more frustrating. We will solve the problem, or blow our speakers trying...lol

    power supply repair??

    in Technical/Restorations

    Posted

    It's a 2.7K resistor and I doubt anything is wrong with it. It is actually three of the same in parallel.

    Check BD1 (bridge rectifier).

    Being a switchmode supply, I would guess it may be tough to troubleshoot without the schematic.

    I would replace it with a linear supply and be done with it.

    Yes I am probably getting out of my depth here..I can use my meter to check for an open circuit, or the ohms of a speaker, but thats about it. I tried to check the voltage out of this at the four pin plug but it was a bit tight, the only thing I discovered was that there was current coming out of it, as it arced as I touched it. supposed to be 18v....but I couldn't verify it. So are you saying I could find a different more reliable replacement power supply?

    power supply repair??

    in Technical/Restorations

    Posted

    Hard to tell from the pic but in the second pic, on the left by "R34B", is that component burned?

    That is R34B. Looks a little toasty.

    dolbyscat, how are your soldering skills? Ever do Surface Mount? I would take a DVM and measure across that resistor. Or, you can use something like a dental pick and LIGHTLY pick at the center of R34B to see if it falls apart. I have no idea what value it is.

    Seems the component at R34B is not burnt, looks more like just the flux from the solder.

    IGroove HG power supply

    in Personal Music Systems

    Posted

    Hey Ben, I have had the same problem three times now, I have got to wondering what is inside that magical black box, might be time to break one open and troubleshoot. My knowledge of electronics is somewhat limited, anyone have any idea what could be so complicated that no-one repairs them?

    Dust Caps

    in Technical/Restorations

    Posted

    ...but doesn't glueing a new cap over the existing effect the speaker in some way?

    Thanks,

    Walt

    I think the effect would be so small as to be non-existant. I would make the call depending on the confidence you have in doing the job yourself.

    Largest structure in the universe

    in General Klipsch Info

    Posted

    It's an efficiency thing.... seriously....nothing in the universe is done on a grand scale unless it is called for. Nothing that needs to be of a grand scale will come about if the minute will work. Remember if what we see out there were any different, then we wouldn't be here to comment about it.

    re-read that...I could have phrased that better, but i'll let it stand.

    For You Smokers Who Know You Need to Quit

    in General Klipsch Info

    Posted

    Happy New Year folks, 4 months ago I quit the habit after 50 yrs of heavy smoking, I found it hard going cold turkey, so I gave the e-Cigs a try.

    At first I found them to be pretty disgusting but I stuck with it thinking of the benefits, however I soon found myself becoming reliant on the darn things, and spending as much or maybe more on them than the real thing.

    After a month on them I decided that I was not going on with the e-Cigs, but I still had my commitment and felt that the only way to go was to suck it up and QUIT.

    I'm am real pleased with myself, I got thru Xmas, and New Year with smokers around me, but I did not give into temptation.

    The biggest suprise to me was how my sense of taste, and smell have improved, not to mention the fact I can now read a licence late from 1000yds, and and my hearing is up into the 45khz range and I am able to communicate with bats.....

    Best of luck to anyone who's going to try quitting the "evil weed" this year..

    49 years ago today

    in General Klipsch Info

    Posted

    How would you know anything about the intent of the founding fathers of the United States of America?

    You worry about Canada, and let the U.S. worry about the U.S., ok? And I promise to stay out of the Canadians' business! Deal?

    -Andy

    Wow!.....Believe me, I know as much about the founding fathers as you do, fact is I probably know a heck of a lot MORE than you do. You have made an assumption based on six letters that appear beneath my avatar.

    49 years ago today

    in General Klipsch Info

    Posted

    Wake up! Face reality!

    I agree...and you should be the first to follow your own advice. Your argument is ridiculous, sure just about anything COULD be used as a weapon, but the reality is that when it comes to choice it's a gun that is used. Why? because that is what it was designed for. Why don't you show me an example of someone pouring gasoline on twenty six people and then striking a match. Pulling a trigger and letting loose a few rounds is a fairly impersonal way of doing someone in, pulling a knife and carving up twenty people is quite another thing. I know it, you know it. If the founding fathers were around today they would know it, and would be smart enough to re-think what they intended.
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