vinylfirst
New Head-Fier
- Joined
- Mar 2, 2007
- Posts
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Hi;
I bought the above board on Head-Fi Amps For Sale here.
Many issues when I received it from USPS. Some I fixed like re-solder loose wire and re-solder elsewhere to improve connections.
I don't know anything about the make, except it is Gillmore in design.
I still had problems. Low level had right side lack of volume, while left was present. I looked at the board and found the white wires coming off the level selector went to two different places on the right vs left boards. One pair to a cap (right board) and one pair to a resistor (left board).
Pic of level selector. Left to right: Level, Volume, Headphone Input and not used Input Selector.
Pic of boards with level white wires terminating. Right board is right side of pic.
Then I re-soldered the right wires to the cap to mirror what was on the good left side. Hope I went the correct way with this. I would have imagined resistors would be good to give low level instead of caps.
Now I have equal volume on the R vs L on both the high and low levels. However I have Bad hum on the low level.
In addition, the vol selector is noisy, drops signal in a few settings, and will give a loud click when turned. Blew my Ultrasone 2500 up when the level of music was tolerable in volume to my ears. I suspect the vol pot? needs replacement. Don't know about the hum.
TKS for any help.
vinylfirst
I bought the above board on Head-Fi Amps For Sale here.
Many issues when I received it from USPS. Some I fixed like re-solder loose wire and re-solder elsewhere to improve connections.
I don't know anything about the make, except it is Gillmore in design.
I still had problems. Low level had right side lack of volume, while left was present. I looked at the board and found the white wires coming off the level selector went to two different places on the right vs left boards. One pair to a cap (right board) and one pair to a resistor (left board).
Pic of level selector. Left to right: Level, Volume, Headphone Input and not used Input Selector.
Pic of boards with level white wires terminating. Right board is right side of pic.
Then I re-soldered the right wires to the cap to mirror what was on the good left side. Hope I went the correct way with this. I would have imagined resistors would be good to give low level instead of caps.
Now I have equal volume on the R vs L on both the high and low levels. However I have Bad hum on the low level.
In addition, the vol selector is noisy, drops signal in a few settings, and will give a loud click when turned. Blew my Ultrasone 2500 up when the level of music was tolerable in volume to my ears. I suspect the vol pot? needs replacement. Don't know about the hum.
TKS for any help.
vinylfirst