Home › Forums › Vintage EHX › Replacement Switch issues with EHX Linear Power Booster 2

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  • October 8, 2021 at 10:09 am #185834
    theobcanada
    Participant

    Looking for some help. Had to replace the on/off switch on this Electro-Harmonix Linear Power Booster 2. This is the larger stomp box not the mole. The old switch had 3 connectors and only the first and middle ones were connected. The replacement switch has 6 connectors (3 on each side). I was told to re-solder as per the old switch using only the 1st connectors on one side which I did. The box works fine with the switch in the on position, but if turned to the off position no signal gets through to the amp at all. Any ideas would be appreciated as I would expect the box to be bypassed when the switch is turned off. It has been a number of decades since I last used this box, but I don’t remember this issue back then. Anyone else have this box and this problem? Next question….can I add photos to these posts?

    October 9, 2021 at 12:37 pm #185836
    j_flanders
    Participant

    The slider switch is a power switch, it turns the battery on or off.
    The foot switch turns the effect on or off. It bypasses the effect. But even when bypassed, the effect is still powered up ‘in the background’.

    To avoid having to remove the battery every time you’re done playing there’s the on/off slider power switch.
    When the footswitch is in bypass mode you should have sound whether the power switch is on or off.

    On other battery-only pedals, like a Fuzz Face for example, the power switch is incorporated into the input jack. To preserve the battery when your done, you have to unplug your guitar cable from the pedal, thereby also disconnecting the battery.
    I find a power switch more convenient than having to unplug the input jack from every battery-only pedal.

    I have two of these LPB2 pedals. I installed a power jack so I don’t have to worry about the battery.

    October 21, 2021 at 9:53 am #186100
    theobcanada
    Participant

    Thanks. Your explanation is what I was expecting. My guess is that there is an issue with the footswitch bypass function since everything else works fine. I suppose the only way to find out would be to change the footswitch.

    October 21, 2021 at 10:20 am #186101
    j_flanders
    Participant

    It’s a good opportunity to convert it to ‘true-bypass’, using a 3PDT foot switch.
    Currently there’s a lot of treble loss when in bypass.

    May 11, 2022 at 8:44 am #185837
    j_flanders
    Participant

    You can add photos.
    Upload them to a hosting site.For example https://postimages.org/
    The press the IMG button and enter the link to your photo.”
    LPB2 power + LED vintage Style
    LPB2 DC-jack + LED vintage style

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