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Re: About VCR power.
This often indicates an error condition of some sort. Has a tape been forcibly removed or forcibly inserted? If so, then mechanism timing or positioning could be out of whack. In regards to timing... often, the cassette carriage, and other mechanicals are gear driven, and if a gear set should jump a tooth or more, timing will be off. Often the gears had marks on them which must lined up according to manufacturer specs.
Other possibilities include: dirty/erratic mode switch (tells the logic circuit the position of the mechanicals), or a bad sensor. Malfunctions in the electronics are still another possibility.
If this is a low-cost VCR, as are most in the last 10+ years, repairs might not be cost effective.
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Best to get the service manual, this will explain the best way to get the tape out of the machine without causing further damage to the drive system.
However if you can't find it, take the top off and remove the tape very carefully. Try and determine how the tape can be removed without force, possibly by moving the mechanism by hand.
The video shuts down to prevent the problem causing further damage.
You can check tape player for any type of object lodged in it. Maybe unplug and turn upside down to here anything inside. Or even any broken tape that come off inside. The only other thing is that the belts inside are worn and will not put device back in play mode.
I believe that the tape must have fowled up and the mechanism has gone haywire and now out of sync. Every video has a mode switch. This tells the electronics what position the mechanism is in. However if the mechanism develops a fault, the mode switch will no longer be able to tell the electronics the true position and thus chaos develops, so the whole thing shuts down. You need to investigate to see if the tape is entangled or damage has occurred.
This is the problem with these combo units. When the VCR has
trouble (this sounds like a mechanical one) it inhibits the TV from
working as well cause they share the same power supply. It needs
a VCR expert to fix ya up.
I tell people all the time not to buy these combo units unless they
really need the conveinience cause you get to throw away the TV when
the VCR goes bad.
If this unit shuts down after you turn it on, it is going into stanby because the microprocessor is not seeing the proper pulses from the mode switch. this could be due to an out of time mechanism because of a broken gear, bad mode switch, the loading basket is out of time or broken, or the capstain motor or the cylinlinder motor is not sending the PG and FG pulses to the microprocessor. These can also be due to a power supply voltage missing. You can check the voltages with a service manual and make sure they are not low. You will also need to get the mechanism manual and check the timing of the mechanism. Then check the mode switch you can get a manual from here http://www.servicemanuals.net/results.aspx?brand=15&model=HRS&type=SM&pos=281 Good Luck