Every time I bent over my HT-1R, I burned my retinas because the power LED is way too bright. With what was left of my eyesight, I found R81 (near the center of the circuit board) is the current limiting resistor for the LED and is 1k. I replaced it with a 47k and that dimmed the LED acceptably. Additionally, I carefully sanded the LED and filed the top so it is more diffuse.
Since R81 is a surface mount resistor, don't try this mod unless you are good at soldering.
It will also void your warranty.
Discussion - HT-1 amplifiers
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