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hartke LH500 weird problem

Discussion in 'Amps [BG]' started by map69, Dec 22, 2013.

  1. map69

    map69

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    Hello guys
    Sorry for my english
    Am french ( Montréal, Canada )

    Just got a hartke LH500 3 months ago
    running in a hartke hydrive 12"
    For the first 2 months
    when i get the power on it takes 20 to 30 sec. befor getting any sound
    i get a good click sound when it does come on
    thats normal time for the lamp to heat up. right ?

    But the last few weeks when i turn the power on same thing 20 sec. to

    30 sec. befor i get any sound

    But after 10 sec. of sound it cuts off whit the same click sound
    and then comes back on 1 to 2 min. later
    and then am good for the night when it comes back on.

    the power button always on/red

    Any Ideas ??????????????

    thanks
    Marc
  2. RickenBoogie

    RickenBoogie

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    None of that sounds normal. I would either take it back for another, or contact Hartke customer support.
  3. JimmyM

    JimmyM Supporting Member

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    Disclosures:
    Endorsing: Ampeg Amps, EMG Pickups
    I might try replacing the tube first, but definitely call or email Hartke CS.
  4. B-string

    B-string Supporting Member

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    The unit has a defect, it needs to be serviced.
  5. map69

    map69

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    thanks guys
    for those fasts reply

    i will have it service by hartkey
    after the holiday
    they told me to bring it
    whit out telling me what could be the problem
    (seem to have a very good after sell service by the way)


    any one maybe more tech. savy
    yould have more specific on what the problem is ?
    just curious ???

    thanks again guys
    happy to have found this cool forum
    you all have a good holidays
    Marc
  6. aledeville

    aledeville

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    This sounds like a problem with the power supply...
  7. B-string

    B-string Supporting Member

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    That would be my best guess also.
  8. jjk2007

    jjk2007 Supporting Member

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    Disclosures:
    Endorsing Artist: Hartke Amplification
    Yep, the original wait time of 20 to 30 seconds sounds normal. (I have the LH1000) The cutting out after that and coming back in is definitely not. You can always give Larry Hartke a call or email and he'll help you get it taken care of.
  9. spaz21387

    spaz21387

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    My lh500 takes about 20 seconds to warm up. But the other part could be alot of things. Id swap out the tube just to see if that makes a difference. After that id contact hartke if the tube didnt fix it.
  10. map69

    map69

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    any one have Larry Hartke

    email adress or phone # please

    Thanks
  11. AdamR

    AdamR Supporting Member

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    Endorsing Artist: VF Cables
    My Kilo Takes 20 seconds or so to click on.
  12. B-string

    B-string Supporting Member

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    Last I knew (201) 680-8153
  13. JimmyM

    JimmyM Supporting Member

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  14. ejmy

    ejmy

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    This is funny.
    I had the same question a few years ago about the amp taking so long to turn on and everybody was telling me that it was normal because the tube needs to heat up before, witch to me was totaly wrong because I had amps with a tube pre amp before and they all turn on right away. I have now a Carvin BX 500 with a tube pre amp and it turns on instantly.
    Larry Hartke had responded to my post saying : give me a call and I'll help you, but reality was that I'm also from Montreal and didn't want the additional expense of calling him. So I sent him a PM with the same question but he never bothered to respond. I don't under stand why he never commented the issue on the board nor that there is no mention of this in the service manual.
    Anyway, I hated the amp so I just got rid of it.
  15. map69

    map69

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    am no tech
    but am shure all tube need a few sec. to warm up to get all its potential
    if ist starts right off the bat.
    then you should see the sound quality get better as it heats up !!!
    i gess
    am i right guys ??
  16. B-string

    B-string Supporting Member

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    This is the bigger concern: "30 sec. befor i get any sound

    But after 10 sec. of sound it cuts off whit the same click sound
    and then comes back on 1 to 2 min. later
    and then am good for the night when it comes back on."
  17. map69

    map69

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    if i change my tube
    what yould be the best choice ?

    the amp comes whit a 12AX7 ( cant find the make )

    thanks
  18. JimmyM

    JimmyM Supporting Member

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    I've never tried tube rolling in a Hartke head, but the differences in tubes are so subtle that I don't know if there will be a night and day difference. But I'm using JJ's in my Ampegs and liking them quite well so far. The Tung Sols and JJ Gold Pins are rather highly regarded by some on here. I'd probably not bother with NOS tubes, though, as today's gear is designed around new tubes, and when I've tried using NOS tubes in new gear, it's messed with the magic.
  19. B-string

    B-string Supporting Member

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    There are a lot of brands out there for 12AX7/ECC83/ECC803. JJ's are common preference along with Tung-Sol reissue and Sino. I would not go for an expensive tube in that application.
  20. map69

    map69

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    is Larry Hartke a member on this forum ?

    if so whats is user name ?

    is he still involved in hartke ?


    thanks guys

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