iFixit - Answers With Device "Eton Radios"

Eton FRX3: Internal Battery not holding charge, how do I fix it?

Sat, 11 Feb 2017 11:44:57 -0700

After having the radio on the box for a year, I decide to use it for hurricane season and the battery is not holding the charge. Does anyone knows how to fix this problem?

⟐ Commented February 11, 2017 at 11:44 MST

Eton FRX3: My radio is not receiving a signal, what can I do?

Fri, 11 Mar 2016 15:38:33 -0700

I am trying to tune my device to a channel but I am not receiving signal. I do not know what is the problem? I also, tried to put it in an open space where I can receive a signal but still it did not work. I am guessing that I have a broken antenna but I'm not sure.

⟐ Answer accepted March 11, 2016 at 15:38 MST

Eton FRX3: My AM/FM dial is broken, how can I replace it?

Tue, 31 Jan 2017 23:35:13 -0700

I had used my radio for about 6 month with no problem but my AM/FM dial just broke. I was wondering if anyone knows how to replace it?

⟐ Answered January 31, 2017 at 23:35 MST

Eton Elite Mini: AM band is nothing but static. Cannot put our local radio station

Mon, 23 Dec 2024 08:02:18 -0700

Cannot p/u any local AM radio station on my new Eton Elite Mini. FM works fine . Nothing but static on AM

⟐ Commented December 23, 2024 at 8:02 MST

Eton FRX3: Where can I get parts (knobs) to fix the frx3 weather radio?

Fri, 19 Jan 2024 14:43:38 -0700

Although I do appreciate you showing me how to remove the back, etc. to get into the Eton FRX3 Weather Radio, I now need to know where to get the parts I need to fix the problem I am having. The volume and tuning knobs just rotate all the way around and do nothing. The display does not show anything but time and battery status. I have looked everywhere for these control "knobs" to replace the ones that just spin, but can't find them. Thanks.

⟐ Commented January 19, 2024 at 14:43 MST

Eton Radios: Eton F1 display not working

Mon, 22 Sep 2025 08:10:15 -0700

Eton F1 display is not working. Nothing is on the display.

Eton FRX3: Hand Crank Broken on Eton Flashlight Radio

Sun, 22 Jul 2018 15:20:08 -0700

The hand crank on our Eton Flashlight Radio fell off. The metal piece that seemed to hold it on almost like an axel may be broken (it only has a leg on one side). Is there a way to fix?

Thanks,

Carolyn

Eton FRX3: How does BZX84C7V5 work in the circuit?

Mon, 11 Jun 2018 03:28:17 -0700

I am researching the zener diode and circuit these days.

The zener diode breakdown voltage (stable voltage) test needs a small current voltage source which is higher than the breakdown voltage. The tester uses a 555 chip to form an oscillator, and then the output pulse is boosted to more than 100 volts for testing.

note

Using a single 555 timer IC and a small transformer to generate high voltage, the circuit will test the zener diode with a voltage rating up to 50VDC. The 555 timer is used in the unsteady mode, and the output of pin 3 drives a small audio transformer, such as LT700. This has the primary impedance of 1K and the secondary impedance of 8 ohms. It is used to reverse the AC voltage to about 120 volts. It is rectified by a 1N4004 diode and filtered by a 2.2U capacitor to get about 150 volts DC. Connect the measured zener diode with the DC voltage meter of the multimeter, as shown in the figure. Load current switches enable zener diodes to switch at 1 or 2 Ma DC.

I am researching the zener diode--BZX84C7V5,( BZX84C7V5 PDF),and I would like to know that what they're used to work at constant voltage, but I don't know how they work. Actually, I kind of get that too, I know that voltage is constant until breakdown occurs (avalanche breakdown), but I don't get why a minimum current is needed to maintain a constant voltage, which is what the textbooks say. Why is there a minimum? I thought any current below the breakdown voltage was constant. I don't see why the voltage would vary through the diodes if it's below a set amount of current, yet remain constant between voltages x-y?