Clock display The time on my under cabinet tv ( is this called portable?) keeps gaining time and is now about 45 minutes ahead of the real time - how do I reset the time?

It's not clear how 'digital' the clock really is sincet hey don't really post the minutae about these things. Could just be the display. If you put your ear against it and hear a hum, there's a motor. As long as the line voltage is +-10% most electronics will do just fine. Line frequency only affects AC motors. That it has a frequency spec is telling. If the motor was DC they'd get away with 50-60hz.

Compute the difference in clock-speeds, namely 90 seconds per hour.
Convert the units of time: 30 minutes becomes 180 seconds.
So, divide 180 by 90 to get '2', namely 2 hours after the 6 o'clock "start" time, which makes it 8 PM.











P.S. There is at least one error in the above solution. If you truly understand the solution, make the necessary correction, and submit the corrected "homework" to your teacher.

call memorex at 1-877-363-6673 and tell them you need ic location u305 in main pcba this is whats causing the problem and they will send you one

On the right side there is a push button switch labeled "Clock". It is springloaded so you have to push it in and hold it for a couple of seconds until the unit beeps and the hour position starts to blink. The volumn up and down buttons will control the changing of the numbers up and down and PM/AM. Pushing the clock button again will change the clock to the minutes position and you cann adjust the numbers up or down just like the hours. Push it one more time will lock-in the new time. Your done.

I've noticed that manually setting the clock forward or back by any number of minutes, results in the same time offset being displayed after unplugging - plugging back in. So, if it's 9pm and you set if 5 minutes fast (9:05pm). Then unplug it and plug it back in 30 minutes later (9:30pm), the clock will maintain your setting of 5 minutes ahead of the actual time (9:35).

I like to set my clocks 5 minutes fast, just to make me always think I'm running a bit late (sure, maybe I'm a bit crazy). But this "sticky" manual setting is kind of a nice feature in my opinion. I'm wondering if it's not intentional?

Anyway, just manually set it back to the real time, and it sho

Could be low-grade electronic components used, less than 1% tolerance values, or the crystal time-base, a precise clock-pulse generator, needs calibration.
Recommend to get it checked by electronics wizard.