This is also highly specialized as the H910 has three different logic levels and is sensitive to not only the exact IC model, but sometimes also the manufacturer of the IC several ICs replaced as a preventative measure, despite testing fine I have seen certain trends among certain logic chips in the H910, so I replace them with new even if they’re working. several ICs replaced after many hours of troubleshooting digital logic new push button switches on the bottom PCB, including the bank of 4 switches for the “pitch change select” this is extra nice as the buttons are much straighter than every other H910 you’ll see new connectors on the DBX cards and lower PCB, so the DBX cards will never have mechanical failure
new tantalum capacitors throughout the unit new electrolytic capacitors on the DBX cards new power supply electrolytic capacitors I have completely overhauled this unit, and since it is such a special one, I took extra care. I specialize in vintage digital studio effects, and the H910 is potentially my most common repair (Foleytronics is listed on Eventide’s website, after all). This unit is also somewhat rare in that it works flawlessly after receiving many hours of service on my bench at Foleytronics in Cincinnati, OH. This one also has handy TRS in and outs installed by a previous tech, and two extra jacks on the side of the unit that are not connected to anything at all under the hood. I have seen many, many harmonizers, and I have encountered some transformer-balanced units, but I have never seen an H910 equipped with both input and output transformers. This is an extremely uncommon unit as it is transformer balanced in and out. For sale is a late 70s Eventide Harmonizer H910.
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