Home › Forums › Help/Technical Questions › Need help with Holy Grail please!!

Viewing 13 posts - 1 through 13 (of 13 total)
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  • May 17, 2009 at 11:39 pm #78248
    space
    Member

    Hello everyone and thanks for any help you have to offer ahead of time,

    I have a Holy Grail that is not working correctly. It has no spring or hall effect. It does have some flirb that can be adjusted with the speed knob. The bypass works correctly. Does anyone have a suggestion?

    Thanks,

    space

    May 17, 2009 at 11:45 pm #96801
    The EH Man
    Moderator

    I would check the slide switch and see if it’s been bumped and is starting to come apart. That’s where I would start.

    May 18, 2009 at 12:00 am #96802
    space
    Member

    Man that was fast,

    Yeah I checked the switch with my continuity tester and the switch checks out fine. What do you suggest next?

    Thanks,

    space

    May 18, 2009 at 12:30 am #96803
    The EH Man
    Moderator

    No idea after that. The switch is about the only thing that controls what reverb effect you get. Usually it’s an op-amp or power supply problem. If it’s still under warranty you can contact EH at info@ehx.com.

    May 18, 2009 at 1:59 am #96804
    space
    Member

    Why would the flerb seem to work, not well, somewhat? I had gotten an aftermarket power supply from G.C. is 9volts the correct voltage?

    Thanks again,

    space

    May 18, 2009 at 2:16 am #96805
    The EH Man
    Moderator

    9VDC is correct. The original supply is rated for 500mA. Is the GC one rated near that?

    May 18, 2009 at 2:22 am #96806
    space
    Member

    Yep it’s 500ma. Why would I get partial effect in the flerb setting? By the way EH MAN did I say thank you.

    space

    May 18, 2009 at 10:44 am #96811
    The EH Man
    Moderator

    The only thing I can think of would be that the processor chip has some problems.

    May 18, 2009 at 5:18 pm #96823
    space
    Member

    EH Man or anyone elese who wants to chime in,

    I was actualy kind of thinking, hoping it would be something simpler, something along that line. Since the flerb works somewhat is the processore the most likely suspect and is there anything else I can check? Lastly I would think, if it’s the prccessor, that after the cost of shiping the HG to EH and the actual repair cost I might be better off buying a new one?

    Thanks,

    space

    May 18, 2009 at 5:44 pm #96825
    The EH Man
    Moderator

    Couple of other things it might be:

    Check for 5vdc output on the 78M05 voltage regulator.
    Might also be the op-amps for the processor output but I’d doubt it since you are getting some Flerb.

    I take it it’s out of warranty?

    May 19, 2009 at 9:20 pm #96853
    space
    Member

    While getting ready to check items mentioned I pluged unit in and a high pitched oscillation which steadily grew in strength until it reached a set output level took place. The spring and hall started to work somewhat but the oscillation remains?

    space

    May 22, 2009 at 3:24 pm #96929
    space
    Member

    Hello,

    Been gone a few days. Any other, processor, ideas?

    Thanks,

    space

    June 13, 2009 at 7:44 am #97836
    granronde
    Member

    i had a problem with the slider switch twice.

    i took the switch out, opened it up and the 2 little foil contacts float insode the switch. they had gotten messed up and needed repositioning. after that, no problemo. but it happened again after a month. same thing, fixed. we’ll see how long this lasts. might just need to buy a new switch and solder it in next time. mines under warranty, but i forgot to register and blah blah blah

    just throwing it out there. helped me with similiar problems.

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