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TYPICAL FAULTS OF VIDEO LAMPS "FUNAY"

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21). FUNAI and him similar vidic.

The malfunction at first glance looks like dead photodiodes of the sensor ends of the tape, but when verified the cause is in the processor. Input from him (from photodiodes) are very sensitive and they just break through, most likely from static. If you measure the voltage at the input with sealed photodiodes and it will be within the limits of 0.8-2.5V. , Then it is necessary to put in the circuit a processor-photodiode on two buffer inverters with a high-impedance input for one processor input, connected in series, I use K561LN2. I managed in this way to restore 6 out of 7 vidicks that have been working without problems for more than 2 years. In principle, it is possible to restore other inputs in this way.

22). FUNAI V-3EE MK6.

There is no sound, the image is normal. After checking the installation (low-frequency input / output) for the presence of impurities and cracks came to the conclusion of the replacement IC chip IC4002 (LA7282). The sound has appeared, but it not the main thing, the main thing the surprising price of a microcircuit of 18 rubles (0,63 cents). That would be the other chips as well. (Idiot dreams :) ).

23). FUNAI VIP-5000 HC MK5.

When you turn on any of the PLAY modes, or rewind is turned off after an equal amount of time. PLAY after 20 seconds. Rewind after 10 seconds. Reason: dirty optics. Clean all the optics in the mechanics and the film end sensors on the motherboard.

24). Video player FUNAI VIP-5000HC MK5.

Disconnected after 20 seconds of operation (the Play LED started flashing), cleaning the optics and checking the phototransistors did not do anything. Then, using a laser pointer, I checked the optics and found a strong attenuation of the light coming to the phototransistor of the rotation sensor, caused by misalignment of the light guides. By simple means it was not treated, and I did the following:
1) I replaced the infrared LED on AL106 (in this case it is necessary to replace 2 resistors in its circuit by 1 with resistance of 39Ω 0.25W)
2) The resistor in the phototransistor circuit increased from 47 to 200 kw. The working capacity was restored.

25). Video player FUNAI VIP-5000HC MK5.

Disconnected spontaneously after 30-60 minutes. Cleaning the optics did not give anything, but even so it was visually obvious that the optical fibers of the rotation sensor of the coil-crocker were not aligned coaxially. The oscillogram of signals on the LED confirmed my suspicions - the amplitude of the pulses was small and was only 0.5V below the switching threshold of the processor. It seems to be a disease of these models, the author of the previous article suggested a rather complicated and obscure method of eliminating this malfunction, I made it easier.

We remove the transmitting optical fiber which sticks out its end inside the LPM (on it sit in the / cassette). In front of us in the chassis of the LPM 3 holes, one medium - fastening the light guide with a screw, to the right and left of it holes for rigid fixing of the fiber with a diameter of 2 mm. Broom and bore them to a diameter of 3 mm. As a result, it is possible to move the fiber to the left or right until the alignment of the receiving and transmitting optical fibers is aligned. The amplitude of the signal became from 0 to the supply voltage + 5V.

Be careful when drilling the chips is attracted by the magnet of the rotor of the drive shaft motor and gets inside causing mashing, preferably before the procedure to remove the rotor altogether.