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Troubleshooting Questions
Question: Where is the serial number for my Lino C?
Answer: The serial number can be found in four places:
1. On the shipping document / packing list
2. On the printed graph of RIAA accuracy measurement supplied with your Lino C
3. On the graph of the RIAA accuracy measurement on the bottom chassis panel of your Lino C
4. On the top (RIAA) circuit board inside your Lino C
Question: Should I connect my Lino C to a UPS (uninterruptible power supply)?
Answer: A UPS typically will supply power for only about 15 minutes, to a maximum of a few hours
(even very lightly loaded), so there is no advantage to doing this.
In the event of a power interruption, and the Lino C is configured for OTG Mode, the Lino C
battery will provide power for approximately 16 hours, and automatically recharge the internal
battery when power is restored (this includes using an IoT relay).
If the power interruption is longer than the UPS runtime, the UPS won't maintain power
anyway. If the internal battery becomes exhausted, and the charging supply is not connected to
an active AC utility line, the Lino C will automatically power down. However, if the power
interruption is more than about 16 hours (or of an unknown anticipated duration), the Lino C
should be powered down manually by unplugging the power adapter from the rear of the Lino
C, and then reconnected to the AC utility line so the battery will be recharged when power is
restored. Note: placing the Lino C in STANDBY mode will devote all of the input power to
battery recharging, providing a faster charge.
Problem: I hear a whining, beeping, humming, buzzing, whistling, or other kind of strange noise
coming from my system.
Solution: Check to make sure you are using a Lino C, instead of another phono preamplifier!
The Lino C was designed for real-world usage "in the trenches" and works as well in any
customer's audio system as it does in a controlled, "perfect" isolated listening / system
environment or lab test bench.
We have devised testing methodologies for stressing input circuitry with radio frequency
interference well into the GHz range, simulating environments near cellular and broadcast
transmission towers, for testing EMI and RF susceptibility and improving our preamplifier
designs. This is necessary for working satisfactorily while immersed in the EMI and RF "soup"
of our modern world, something preamplifier designers from an earlier era never had to
contend with! With properly wired balanced connections to your turntable / cartridge, the Lino
C is guaranteed to have no hum, and will be immune to electromagnetic interference pick-up.
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