If you experience problems with loading and unloading cassettes in VCRs the author published the following article offers a simple way repair. To do this, he recommends treating the belts in the mechanism of the special composition.
Some VCRs (VM) after a relatively short period arise is a failure in the actuation of the mechanism for loading and unloading video cassettes. The upload command is executed with typical hysterical the sound of the engine, and the tape is not unloaded or or is discharged with difficulty after considerable thrashing. The reason is the belt slippage in the drive mechanism shaft loading the tape. It simplified kinematic diagram shown in the figure.
In such a widespread designs the force from the DC motor 1 transmitted to the drive shaft 2 by means of two rubber belts 3, 4 and pulleys of different diameters. Pulleys, usually plastic. Grip surface belt with them is relatively small. At the same time the required effort, especially during unloading of the cassette must be significant. As a result, even with a small performance wear - stretch belt, smoothing their surface - there is a slippage on the pulleys. The engine 1 is idling, until emergency (with slip) eject or turn off the VM system protection. Since the drive was involved in other regular modes working in parallel can be observed failures when rewinding, gas station tape, etc.
Known recommendations on rubbing pulleys and belts alcohol in practice useless: it is poorly dissolves fat and has a destructive effect on rubber. Crucial way - replacement belt. However, firstly, you need to have their spare set on a specific model of the device, and secondly, you want dismantling door and even just driving mechanism, disassemble which simple, but difficult to collect. In any case, this meticulous the work requires some qualification.
Propose another way to fix the malfunction. The gist of it is that the belt surface is covered with a special composition of glue "Radical" and rosin. The composition is prepared by thorough mixing of small the glue "Radical" (or other rubber-based) and pounded "into dust" rosin in the ratio of 1 : 0,5...0,7 (by volume). If necessary, the mixture a bit diluted with gasoline. The belts 3 and 4 is removed from pulleys (without disassembly of the mechanism), pre-wipe with gasoline, then cover with the prepared composition. After it dries during the day on a working surface with a layer of high adhesion and a high coefficient of friction (at the expense of rosin). Further return the belt in place. The performance of the VM is fully restored. Sometimes it is enough to perform this operation for only one slipper rubber belt.
In that case, if the drive mechanism is inaccessible even to relieve belt, can be left in place. During this coating operation perform long thin brush, gradually stretching the belt on the pulley with tweezers. Smeared liquid composition, it easily glides on the plastic surface. The belt is not stuck to the pulleys, periodically load and unload the cassette "propertypane" mechanism. To start it immediately after the thickening composition (20...30 min).
The method is simple in implementation availability of components and has a high efficiency. The performance of the VM is restored for the long term. Theoretically possible some uneven rotation due to different thickness cover, but the mechanism it doesn't matter. If time deposited layer will wear out, the operation is easy to repeat.
Author: A. Pakhomov, Zernograd, Rostov region