Question about JVC HR-S3912U S-VHS VCR

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VCR stuck in auto time set mode

While watching TV the other day, my HR-S3901 display went to "AUT" and the signal was lost at the TV. When it does this, the unit locks up and no front panel or remote buttons have any effect. Having a VCR years ago that locked up, I unplugged it and re-plugged it in and the unit came back on. After about 30 minutes it did the same thing. However it is now stuck in this mode. Whenever the unit is plugged in, it blinks a channel 2 very quickly, then it goes into the AUT mode. Sometimes after about 10 minutes, the -:-- shows on the display. But in no case do any of the buttons do anything nor can I get any picture out of it. I tried the holding of the power button for 10 seconds trick with no success. Any ideas?

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  • Rick Lentz Jul 11, 2007

    Thank you for your suggestions. Like most people, I looked for the simple cure. I have pretty much gone with the last suggestion that refers to the new VCRs as disposable. Mine is about 3 to 4 years old. It isn't even heavy enough to use as a paper weight. For now I've shuffled in another unit I had elsewhere in the home. In time I may play with the power supply issue you suggest, having little to lose if it is not the problem.

    Thank you.



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One possibility is that the power supply section isn't providing the correct voltages. If you have a little tech savvy, and a volt meter, check the output voltages. There should be a +5 volt line, +12 to +14 volt line, and perhaps a -40 (approx) volt which supplies the display. Early VCRs often had this latter voltage, but later ones not having much of a display might not. Anyway, check for these voltages- the +5 volt should be right on within .2 volts (4.8 - 5.2volts). If this voltage is off much more than this, problems are likely. Defective components would likely be the electrolytic capacitors in the power supply, most of which are used to filter those noted voltages. If by chance one or more caps. is defective, replacements are found at Digi-Key Corp. Their Panasonic FC capacitors are what I generally use for most of these replacements. Mouser Electronics will have suitable parts too. Beyond this problem, maybe an erratic mode switch, or other logic problem. The kind of problem you describe may be difficult to diagnose. If this is a late VCR (10 years old or less), most of these are of the disposable variety, unlike the old rigs which were built like tanks, comparatively speaking.

Posted on Jul 03, 2007


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Waveceptor reset

I have a number of these Casio and Citizen watches. This watch does not use GPS for the time keeping. It uses a land based broadcast time signal. There is public information about where the signals come from for your area. The technical breakdown of the time code signal is public access information.

The instruction manual of the watch has the information about when your watch should automatically receive the time signal, and how to set up the watch. Many of the manuals also included a map showing the time signal coverage, and includes the time of day information to show when the signal is strongest.

Make sure the watch settings are for your time zone. This is important. If the main time zone is not for your area it will be trying to receive the signal at the wrong frequency at the wrong time of day. There are areas where the signal may not be able to be received. You can get the mapping for this from the service that the watch has been set to use.

In North America the auto time receive is supposed to take place between midnight 00:00 to 04:00. In the eastern part of North America the reception is poor compared to central and western part of North America. Check the instruction manual for your watch for details.

Below is the spec listing of your watch.

  • Atomic Timekeeping
    Receives time calibration radio signals which keep the displayed time accurate
    Auto receive function (3 times per day)
    Manual receive function
    Signal: WWVB, UK MSF Frequency: 60kHz
  • 50M Water Resistant
  • EL Backlight with Afterglow
  • World Time
    29 times zones (30 cities), city code display, daylight saving auto/on/off
  • Date Alert
    Display flashes when set date is reached
  • 4 Daily Alarms and 1 Snooze Alarm
  • 1/100 second digital stopwatch
    Measuring capacity: 99:59'59.99"
    Measuring modes: Elapsed time, lap time, split time, 1st-2nd place times
  • Hourly Time Signal
  • Auto Calendar (pre-programmed until the year 2039)
  • 12/24 Hour Formats
  • Accuracy: +/-20 seconds per month (with no signal calibration)
  • Battery CR1620
  • Approx. battery life: 2 years
  • Module 2556
Size of case / total weight
WV57 47.0 x 39.0 x 12.5mm / 44g
WV57HD 47.0 x 39.0 x 12.5mm / 89g


Apr 29, 2014 | Casio Wave Ceptor WV57HA-1AV Wrist Watch


How to set your Global Atomic G-Force digital watch

This watch says "Strong Ideas" on the back instead of a 4 digit number.

Press LIGHT briefly and your LCD will be back lit for 5 seconds.

Press MODE to cycle through normal, alarm, dual time, and stopwatch display mode.

Hold MODE for 3 seconds to enable the radio to receive time signals. Once RC is activated, the watch will search for time signal automatically every day.
Hold LIGHT for 8 seconds to disable the RC function.
Press MODE, SET, and ADJUST simultaneously to reset the watch.

Press ADJUST while in normal mode to toggle year/time display.
Press SET while in year display to alternate Month-Day or Day-Month.

Hold SET for 2 seconds while in normal mode to cycle through world atomic radios (US/GB/DE/JP) push ADJUST to change, and SET to continue. Next the language will flash (GB/FR/DE/ES/IT). Next is DST on/off. Next, in order are hour, minute, second, year, month, day, and 12/24 Hr format.
(US only) Press SET to display timezone. The default is PA, use the ADJUST button to cycle through MO, CE, or EA as desired.

Press SET while in alarm mode to toggle alarm on/off.
Hold SET for 2 seconds while in alarm mode to change the hour and minute with the ADJUST button.

Press SET for 2 seconds while in dual time mode and ADJUST +/- 23 hours from normal time.

Press MODE to exit most settings.

Press ADJUST in stopwatch mode to start/stop the timer accumulatively.
Press SET to reset stopwatch to zero, or split measurements if timer is running.

Change the battery with a new CR2025 to prevent damage that low or dead batteries can cause by leaking.
Do not use solvents to clean the watch, use only a dry or water moistened cloth.
Do not use buttons when the watch is wet. Water may penetrate the watch and cause damage to it.

on Dec 31, 2011 | Watches

1 Answer

I have lost the manual and would like to hook up the VCR to my TV in order to record programs. Can you help? JVC Video Cassette Recorder HR-D18OU Thank you.

Is the incoming signal OTA or cable? (If cable, is it analog (CATV) or digital (QAM)?)

Most TV's do not have a video out but you should check your TV. Assuming the usual TV with no video out, then you will need a set top box to record any program other than analog signals (CATV or a low power OTA option). The VCR only has an NTSC (analog) tuner.

For an OTA signal, take the coax from the antenna to a digital-to-analog converter coax in, then coax out of the converter to the coax in (tuner) of the VCR. Then set the VCR to channel 3 or 4. Set the switch on the converter. (Some VCRs will record Line In or Input, so you could use the composite out of the converter to the VCR.) Then coax out from the VCR to the coax in on the TV and set the TV to Channel 3 or 4 as well. Set the switch on the VCR. (Alternatively use the composite (A/V) out on the VCR to the composite In on the TV and set the input to AV1 (or whatever the TV calls the input). Digital cable will be set up like the OTA, except for using a cable set top box instead. You may want a splitter to allow for watching one program while recording another. In that case, put the splitter before the set top box if the TV has the digital tuner. Otherwise put it after the set top box. In both cases, you will need to use the AV (composite out) on the VCR to the TV.

For analog cable, take the coax cable and connect it to the VCR's coax in. Then connect the coax out or AV out to TV.

Set the VCR to the desired station and press REC. For timed record, enter the menu and set the time to start and end the recording as well as the channel. If you are using a set top box, set that to the desired station and then press record. (Leave the VCR set to Line in or channel 3 (4) as needed.)

Manuals for some JVC vcrs are here: . A manual for a similar model will help since they all connect the same way. However the HR-D18OU is not in the list.

I hope this helps.

Cindy Wells

Feb 10, 2011 | Computers & Internet

1 Answer

Set time on Fossil DQ1138 Watch

Press and hold the SET button (it will read CHIME with a flashing on or off). Then push the MODE button - the top will be flashing 12-HR or 24-HR. Push the ST/SP button to toggle between the 12-HR to 24-HR reading. Push the MODE button to get to the hour/minute/second/year/mo-day/month/day value you want to change. Push the ST/SP button to increase the value, the RESET button to reduce the value.

Apr 01, 2009 | Fossil Digital Sport Hologram Display...

1 Answer

I have a sanyo television but no remote.

unplug machine for about a WHOLE day, sometimes two days (believe it or not!) and it may go back to default mode.
P.S. how did it go into video mode in the 1st place

Jan 11, 2009 | JVC HR-S3901 S-VHS VCR

1 Answer

How do I use my VCR with the DTV Converter Box that I had to get?

You only have three choices that I know of. The first two are a bit expensive though. 1) Buy a digital TV, then you could split your antenna cable to the TV and Converter box. Then use the converter box as the tuner for the VCR. 2) Buy a digital VCRand do the same thing using the converter box as the TV's tuner. or 3) Get a second Converter box and split the incoming cable between the two, using one for the TV and the other for the VCR. If you use any of these ideas, remember that You need to not have the VCR and the "new" tuner for the TV set to play on the same TV channel, and that you switch teh VCR out of VCR mode with the TV/VCR button, so that you get a clear signal on the other channel. If anyone has an easier solution, I too would like to know about it, seeing as I am in the same position and would like to avoid this problem as well.

Jan 02, 2009 | JVC HR-J692U S-VHS VCR

1 Answer

VCR doesn't work

The DVD has to be off so that it allows the VCR signal to pass through. Also make sure the VCR's output is set to channel 3 (little tiny slide switch in the back by the VCR's antenna jacks).

Jan 03, 2008 | JVC HR-S3901 S-VHS VCR

1 Answer

Hitachi F361 VCR Digital Auto Tracking (not 631!)

I had the same problem when I got the TV from someone and I didnt have a remote. I went out and got a ONE FOR ALL remote and once I got it set up I had it in VCR mode and hit the AV button and now I can get to the channels. Hope it works for you.

Oct 31, 2007 | Hitachi VTFX631A VCR

1 Answer

How to hook-up my VCR to NTSC TV?

Zohar, You must remember that various regions in the world have different Broadcast systems. TVs and VCRs are manufactured for playback and Recording in different regions. But, while the JVC HR - J 437MS is a Multi System VCR as far as Playback is concerned, It has only a PAL Tuner. So , while you can watch NTSC Tapes, you cannot tune a NTSC Broadcast through its tuner, and watch on your TV. You will only get a B&W picture. To atleast view NTSC Tapes, use the Remote of the VCR, and set System to AUTO or NTSC. Again, there are 2 versions of NTSC - the 3.58 and the 4.43 ones. Certain regions of the US broadcast in NTSC 3.58, and some in NTSC 4.43. So select carefully, Similarly, bring up the TV menu, and select AUTO or NTSC for TV reception. Now you will be able to view American broadcasts in color.But I suggest you set System to AUTO, as then you can watch your earlier Tapes collection from Europe also. As for connections, it is fairly simple. I am uncertain if your VCR has a 21 pin euroconnector (SCART)but it is unlikely. You will be having Audio L and Audio R out ockets at the rear of the VCR, alongwith Video Out socket. Just connect suitable RCA cables from these OUT sockets to the Video and Audio IN (L) and Audio IN (R) siockets on the TV. select AV input, and you are ready. check it out. 99% it will be work out.

Jun 20, 2007 | JVC HR-J437MS VCR

2 Answers

JVC HR-S3901 S-VHS / Switching from TV to VCR no longer works . . .

Ifyou do not see the VCR/TV button switch on the front panel, then its a problem most likly with the firmware in the microprocessor. If you do see the VCR/TV indicator switching in or on the front panel display, most likly a defective RF modulator/switcher or RF antenna pack. You may still be able to get one from like MCM or tritronics or PTS corp can rebuild it for you. I have seen this type of break down many times with VCR's as we used to do hundreds of VCR repairs a day as we did factory service for several companies in the NY/NJ area. Good Luck Please do not forget to rate this thread.

Dec 10, 2006 | JVC HR-S3901 S-VHS VCR

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