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H3000 Series Support



To find out which OS your H3000 is running on, just hold down the '5' key at power up and an 'info' softkey will appear. Under that softkey will be the OS revision number.



From page 22 of the H3000 manual...

How to save user presets:

1.      Hook up the "midi out" from the 3000 to the "midi in" on the PC/Mac.

2.      You'll need software that has the sysx data dump function like Cakewalk or Logic.

3.      Load the H3000 preset/patch that you want to save/share.

4.      Set your software ready to receive sysx.

5.      Press the -FUNCTION KEY- 5 Times. Press -DUMP EDIT-.  Now your software receives the data. 

Save it to your HD(*****.syx).



The H3000 is a very complicated, extremely digital device.  It uses three DSP processors and a lot of high-speed circuitry.  Although there is nothing but common sense to try to stop you from troubleshooting the digital circuitry, please accept our assurance that it is very unlikely that anyone other than a very experienced technician who has worked on these units for many weeks with factory training will likely diagnose and repair subtle defects.  Few people with these qualifications are found other than at Eventide.  That being said, only a modest percentage of defects fall into this category.  The majority of problems are mechanical ones, having to do with connectors rather than defective components.   Other user-fixable problems typically involve the audio inputs and outputs.

Symptoms that are frequently caused by user-repairable problems

The following symptoms usually indicate a power connector problem - they typically occur anytime from turn-on to a few minutes later:

The display backlight varies in intensity or flickers The bypass relay clicks without command or sporadically The display "freezes" or flashes odd messages in non-English characters

What to do:  Scrutinize all the internal power connectors for tightness, cleanliness, discoloration, or other problems.  Tighten, reseat, clean, repair, or replace as indicated.

The display indicates, or you believe that the unit's memory and/or presets have been corrupted.

What to do:  Reset the H3000 OS and presets:  

Depress and hold the FUNCTION key while you switch on power. Release the FUNCTION key. When the H3000 displays "REMOVE ALL PRESETS?," press the "YES" softkey When the H3000 displays "RESET THE OPERATING SYSTEM?," press the "YES" softkey.

The following symptoms may indicate other loose connections, typically EPROM chips not reliably in their sockets:

Some presets work, some don't Some presets are missing

What to do:  Reseat any socketed components, especially the EPROMs.  Exercise (remove and replace) other internal connectorized circuits.

The following symptoms may indicate defective in/out circuitry.  This typically occurs due to previous bad connections to the outside world on which high voltages accidentally were present.

One input (or output) works, one doesn't One output is very distorted or has a DC bias, the other is fine Other connections (e.g., MIDI) are intermittent or defective while the unit seems to be otherwise OK

What to do:  Carefully look around the connector in question for burnt or cracked components or, in some cases, broken or charred PC traces.  Replace or repair as indicated.

Intermittent problems that seem to be related to temperature, e.g., "dies or gets noisy after being on for an hour," are frequently caused by thermally intermittent components.  Although these are very difficult to find (for us, too) by normal electronic troubleshooting procedures, there is a simple approach that sometimes can pinpoint the component.  There are "freezing sprays" available from many manufacturers that can be used tocool individual components.  By judicious use of these products you can frequently isolate a bad component. 


If your unit is displaying any of these symptoms, your unit requires repair.

Random noises that occur regardless of circumstance or temperature Crackling or hissing noises that occurs on some or many presets Subtle problems such as unusual distortion, bad frequency response, high noise level Unit unresponsive to control inputs after checking all connectors Unit appears functional but no audio output One channel dead with no obvious analog cause

Visit our Repairs Page for more information.


1.      Turn off H3000

2.      Hold down "FUNCTION" key.

3.      Keeping the key held down, power on H3000.

4.      You will then see a message saying "Remove all presets ?". Release FUNCTION key.

5.      You will usually want to enter NO!

6.      Next you see "Reset the operating system".

7.      Answer "Yes."

8.      This will return enables, channel numbers etc to the way they were when the unit left the factory.

The H3000 will then restart itself.


There are a number of electronic problems that can cause the H3000 (or any audio product) to have a higher than normal noise level.  There are also a number of operator settings, connections, and functions that can make the unit sound noisy even though it is working normally.  Finally, because there is no simple way to quantify noise in normal operation, it is easy to imagine that a unit is noisier than one remembers it.

Here is a quick, objective way to give the H3000 a rudimentary check for noise problems:

Set both pitch and delay to zero. Set the H3000 Input and Output levels to 0dB. Connect a distortion meter to both outputs (one at a time) and set the meter to read around -70dBm near full scale. Insert any low-pass filters available above 30kHz.  Our meter has an 80kHz LPF.

The meter should read approximately -68 to -72 dBm.  If it is significantly higher (or lower) or the channels are more than a few dB different from each other there may be a problem.