Playing a pre-recorded tape has perfect audio playback. However, when I record a game, or anything else for that matter, I have a clean and perfect picture but I have absolutely no audio! I sent it away to be cleaned, no help. I took it apart and looked for any damaged, burned, overheated or able to be noted problems. Seems to me that the audio pick-up would be fine since it does playback pre-recorded media. If I were to guess I would believe that there is some kind of failure in the electronic components of the recording section. Is there a specific part that I should be questioning? If I had a schematic I would probably have found the answer there. I feel confident that this is an inexpensive repair. Any ideas?
I have panasonic VCR for more than 10 years and it has been always fine Lately, when I record a program no sound is recorded but the picture is fine. The VCR plays prerecorded programs ,both sound and picture normally
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Re: Records media but playback has no audio.
Are you absolutely sure that it is receiving an audio signal?
What input are you using? Try recording using alternate inputs.
Audio part of a VCR is normally way more reliable than the video.
The exception is on high-end stereo types where they record the extra
audio signals using the video head cylinder in which case it can easily
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If it plays back a pre-recorded tape OK, then the tape head will be good. If it doesn't you might have problem, with either the head or the pre-amp stage.
However if it is playing back OK but not recording, then you have problem in the record circuit. Some tape decks physically switch the circuit when you press record. Pushing the record button will cause a switch to move position. In some cases dirt or dust can get into the switch and it doesn't connect properly. Switch cleaning fluid will correct the problem.
However the record circuit itself could be faulty. Perhaps an IC has developed a fault on one channel, which will need to be replaced.
Watching what happens when you press record with the top cover off, showing the workings, might point to some movement of the mechanism to reveal a faulty switch.
You're kind of light on details of the equipment you're going to use - so the best I can do is provide generic instructions. You'll need two devices - one must be able to perform playback for source media and the other for recording or copying duties. Inspect the jacks provided on the rear of both units. Most provide standard RCA type "Phono" jacks for left and right audio channels. Connect a stereo patch cable (with plugs that match the jacks of the playback and recording devices) between the left and right OUTPUT (or "PLAY") jacks on the source device and the left and right INPUT (or "RECORD") jacks on the recording device. Insert the source tape, cd, album, etc. in the device that will playback the original and insert a high quality blank media into the device that will provide recording capabilities. Begin playing the source. Set options such as tape bias, Dolby Noise Reduction, etc. on both source and recording devices to match media in each. Advance the playback source to a point that contain the loudest sections. Set recoding levels by monitoring the VU meters on the recoding device and vary the input adjustment levels so that only the loudest prortions of the program just begin to briefly "flirt" with the 0Db or red zone of the meter. Signals that cause the meter to indicate into this area and beyond begin to overload the amount of information that can be recorded on the blank media and often result in muddy audio quality during playback, later. You should also record the same section repeatedly with differnt options (bias, noise reduction, etc.) to actually hear the difference to determine which sounds best to you. Once levels are set, queue the playback device and start recording. In the case of tape, allow enough recording time to let the leader section of the tape to pass beyond the recording heads for several seconds or more. Once the desired amount of silence has elapsed, play the source program. Allow it to run to completion using both sides in the case of tape and then playback the entire new recording to make sure it recorded without any issues.
I'm hoping your problem is intermittent. Then there's hope.
I've been recording CD's for 10 years and have had similar experience on playback (way after it was too late to procure the source and do it again). My symptom was a nearly constant crackling laid over the audio (constant ineffective error concealment or correction).
I'm a professional Enterprise Data Storage (Tape and Disk) career customer engineer, so I know a little about things and how to troubleshoot Read errors.
I could never pin it down to anything repeatable, like media, but it seemed to happen most on CD's-R-US cheapo discs. The best I can offer is try some different brands (or lots) of media and see if you can find one or two that work.
Feed back what the results are if successful. Many people have the same problems.
Trace the wires from the head to the amp section. Put your finger on where they join (during playback) and see if you can get a buzz. If you can't on either channel, look for something that might be common to both channels. Either a switch, or a pre-amp IC, as being the cause of the fault.
open the recorder, 4 screws at each corner, wipe the playing head and the voice reccognition head, to the right of the playing head head with a baby wipe, you will be amiazed what **** comes off it. DON'T scrub it just wipe lightly, spin the playing head so it's clean. If you have a lint free cloth ( a glasses cleaning cloth you get in the case is brilliant) Try the tape (before you put it in make sure everything is DRY!) and your problem should be solved. It worked for me! and that came from a TV engineer
In 1990s Sony camcorder records movie in analog format so playing in digital camcorder like DCR-TRV730 doesn't mean it will be converted in digital format and you can not import file in PC for editing purpose. You will get analog signal while playing back old cassettes.
Regarding SP, LP speed, its decided at time of recording. Camera sens SP or LP automatically in playback and set itself accordingly.
If you want to convert old cassettes into digital format, connect our camcorder to DVD recorder and burn DVD which is digital format, copy DVD files in to PC and do desired editing.
If it plays back pre recorded tapes then there is nothing wrong with that section of the unit. Does it playback audio and not picture or does it not playback anything.
Also, when trying to playback a recording what is seen of the screen? Snow(black and white dots or wiggly picture?
The unit uses two separate circuits to record and playback tapes. Is any thing else connected to the unit while you are recording? If you are using anything plugged into other ports on the recorder it may not see the camera input causing it to not record anything..