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I've owned a first generation BIX for a few years already, and for a variety of reasons it sat mainly unused until recently.
I am embarking on digitizing my album collection (1K+) and am now using the tt daily. I am finding that it is not holding the speed constant. I have topped up the oil (many times in fact); cleaned the edge of the platter, the drive string and drive pulley, and levelled the table. From the beginning of one side to the end, the speed changes. Even if I let it run for a while to "warm up", the speed varies within minutes. Very frustrating.
Has anyone out there with a BIX had this problem? More importantly, how did you fix it?
Responses are appreciated.
Aural Robert
... fools in love, gently tear each other limb from limb ...
switching supply.
Going to a decent supply might fix it. Using a 12V battery would be a good way of testing if that is really the cause. I found it more stable when I went for a battery.
To infinity and beyond!!!
Hi Bas,
Thanks. That makes sense because battery (and a power supply with more regulation) would isolate the supply from line voltage fluctuations.
regards
Brian
DIY - Done Right!
In general about the BIX
The DC controller has very good rotational stability but doesn't use feedback as this can lock speed but trash the sound as it hunts for the optimum speed. There are good feedback controllers but come at a high cost.
Any of the following issues can affect stability:
oil or soil on belt, pulley or rim. Also improper belt tension.
Scored or lack of oil in the bearing.
We received some parts back and the user had taken apart the bearing and caused damage. this is very easy to do as the tolerance is very tight and the spindle steel is very hard. It is very easy to score the walls of the bearing housing putting it together.
Also some sent back the pcb controller with burned out resistor due to not following the start up instructions in the manual.
If any have a problem they are welcome to return the bearing and the pcb controller and we will test it. Aside from the external problems mentioned, these 2 parts would be the main concern.
regards
Brian
DIY - Done Right!
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