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Repair of 1963 Hohner Orgaphon 18 M amplifier. |
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The amplifier came to the workshop with the following error message! "There is a faint hum in the speaker, but there is no connection through when connected instruments". I found the circuit diagram. |
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The amplifier came on the workbench, it's a little mark of its 57 years. |
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The amplifier was opened and troubleshooting could begin. |
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The biggest failure of the amplifier is that the two ECC808 tubes simply were not there, so it explains why there is no signal coming through. Additionally, there are changed and error mounted some components of the Hi-Fi channel. |
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