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If the eject mechanism is belt driven, check to see that the belt not slipping or off the pulley. If gear driven check to see if the motor that powers the eject cycle is receiving power when called for.
VHS tapes have two tracks One a Video and the other Audio. The read Heads align with these tracts and transmit the data to the appropriate electronic converters; one is the Audio Amp. and the other the Video Controller. If one or the other is defective or coated with material transferred from the surface of the tape; that magnetic head cannot pick up the data.
The first thing to do is Clean the Heads. With a cue-tip saturated with rubbing alcohol; (Not dripping wet) gently ride back and forth over the magnetic head inside of the player. Do this a few times until there is no sign of blemish on the surface and when DRY, insert a tape and see if that fixed the problem. Often time...the OXIDE from a tape collect on the heads and must be removed. This cleaning method will NOT hurt the player at all. Just be certain to Unplug the player when doing this proicess.
Bad grounds are common and need to be resoldered. Next you may already have a few bad capacitors that will need replaced. If you can locate the audio output IC, you should check in this area for bad capacitors and bad grounds. 99% of the time a bad ground and bad capacitors will offer you goofy problems in a TV. So take heed and inspect, resolder and replace those capacitors. Thanks for asking and show a few hands of support!
This is very likely not the picture tube. I suspect that something in the vertical oscillator section has gone bad. You will need to get the schematics for this set. Locate the vertical section and look at the transistors and IC's to see if they are still good. Also check for bad solder joints and open resistors. You can do all the checking with a simple Digital Volt Meter. You can get all the info you need online for how to test transistors, diodes, electrolytic capacitors and resistors. Most of my TV fixes have involved bad solder joints that have gone bad after years of hot/cold cycles , usually under a component that gets hot (heat sync) , resistor, or heavy item such as a transformer. The other issues are usually with transistors or IC's that have gone bad due to power surges or age degradation. Sometimes fuseable resistors open open. Sorry I can't be more specific. There are too many things to check. Could also be a power supply issue. but highly unlikely if you still have a center line. TV tubes hardly ever go bad unless the set is very old.
1. The VCR has 2 threaded coax connectors on the back. One is input for your cable or satellite. The other is the output to the TV. You would set the TV on channel 3 or 4 (selectable on the back of the VCR). Put TV on channel 3, insert a tape and press play. When the VCR is off, the cable or satellite input is routed to the TV.
2. If your TV has Video and Audio RCA connectors, you can connect the VCR that way. You would then put the TV on Video 1 or Video 2 or whatever your TV set supports.
You should open the TV and look for a blown fuse near where the power cable enters the set. A lot of times you can buy replacement fuses at a local electronic or hardware store and they're easy to replace.
Check the fuse. If it is blown, it will be obvious and make sure that the set is unplugged before replacing it. If it blows again, or if it is not blown, your problem is probably in the 'X' volt regulator and you will need professional help with the repairs.
You can also check the board where the components are mounted and resoled any that look bad. Brief power outages may cause the TV to turn off on its own. If you are using a surge protector, try connecting the set directly to the wall outlet.
In your case it could caused by a blown fuse, a leaky diodes or a bad solder joint at the horizontal drive transformer.
All can be replaced at a local electronic or hardware store and they're easy to replace
If this does not correct the problem, you may need to have your TV serviced or buy a new one.