It sounds like the audio control head is at fault.
If all prerecorded tapes (movies) play with audio level jumping up and down, is is likely that the audio head is dirty. The audio head in the VCR looks very similar to a head of an old audio cassette player.
First, try to clean the audio head by running a VHS head cleanning tape. The cleanning tape will usually clean the path of all tape mechanisms..
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sr you can disconect hdmi cable and use a litle speaker and check for audio in rca cables output , when you put your vcr play you can have audio in rca red cable and rca white cable i think when you put hdmi your loose in rca the audio , remember in hdmi you have audio and video , if you dont have audio in vcr the audio head are bad thias is used only in vcr mode. good luck
if you get sound from anther recorder that tells me that the head on the current vcr is working, which leaves just the output, if using a antenna switch to channel 4 if using 3 (theres a little switch in the back) if you are using 4 change to 3, if your using audio output cables swap them with a good working pair. if all is good it would require service (unless the mute is pushed) good luck
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Your post/description indicates that possibly the brake mechanism of the supply reel is acting up. A typical VCR has 2 reels inside that spins the tape. The left side is the supply while the right is the take up. If the brake (on the left/supply) is engaged (even partially), then the entire mechanism would have a hard time pulling the tape around the video/audio head and would partially be stretching. This would represent itself as jerky audio/video in most instances. There would possible also be a low screeching sound coming from the machine/tape. An indicator would be stretched tape - there would be uneven edges of the tape.
Since this is an electro-mechanical problem, perhaps your best course of action is to seek the services of a qualified video machine technician.
Alternately, it may be possible to loosen things up by first fast forwarding the entire tape and thereafter rewinding fully before you play it.
Hope that this be of some help/idea. Pls post back how things worked out or should you need additional information.
When not watching a tape, be sure power is off ( VCR ).....
How is the picture...? When you watch tapes, do you put the
TV on channel 3 or select video..? Also, what is signal source ?
Cable ? Box ?.....................T.
Unit might be picking up 60 cycle hum or other electromagnetic field. Is VCR sitting on/under another piece of electronic equipment? If so, it could pick up such from the power supply circuitry of that other device. Try moving the VCR away from other equipment and see if the unwanted sound disappears.
All you can do by yourself unlesss you are a tech. Is run a head cleaner tape through it. It sound like a dirty head to me. Here is something a lot of people do not know, The video head and the audio head in a VCR are two separate heads. thats why you can loose picture and not sound. Best taken apart and cleaned manually with rubbing alchol but not advisable if you are not experienced due to high voltage and if cleaning improperly you can damage the unit worse. Good Luck
Are these prerecorded tapes or ones that you recently recorded? Or are they all normal audio tapes?? Try a pre recored and turn off the HI fi audio and thats an easy thing to do as put it in normal and mono.. Get back to us so we can assit. Not enough info as could be 100 things.
There are no such adapters that would allow 8mm, Hi8 and Mini DV tapes to be played in a VHS VCR. Only the old VHS-C tapes can fit and play in an adapter.
There are several reasons why 8mm (or Hi8 and miniDV tapes) cannot be physically played in a VHS VCR:
1. 8mm (Hi8, miniDV) is a different format with different technical characteristics than VHS. These formats were never developed with the intention to be mechanically compatible with current VHS technology.
2. 8mm/Hi8 tapes are 8mm wide (miniDV is 6mm wide), while VHS tape is 1/2" wide, making it impossible for a VHS video head to read the taped information correctly.
3. 8mm/Hi8/miniDV tapes are recorded and played at different speeds than VHS, so even if the tapes could physically fit into a standard VHS VCR, the VCR still couldn't play back the tapes at their correct speeds.
4. 8mm/Hi8/minDV audio is recorded differently than VHS. 8mm/Hi8 audio is recorded in AFM HiFi mode, while miniDV audio is recording in 12-Bit or 16-Bit PCM digital audio format. So, even if the video could be played back in a VHS VCR, the audio could not be read properly.
5. 8mm/Hi8 video is of higher resolution than VHS and is recorded in a different bandwidth length (miniDV video is recorded digitally), so once again, a standard VCR still could not read the information correctly, even if the tape could fit into a VCR.