MS 6106

Hello All! RECONDITIONING THE MONITOR "ELECTRONICS MS 6106" (c) V. PATRASHKOV, Krasnoarmeysk, Moscow region. I offer radio amateurs who have an Electronics video monitor MS 6106" from the domestic PVK "Electronics MS 0585", method modifications, allowing it to be used as part of IBM-compatible personal computer (PC). As you know, a monitor, especially if it is of high quality, - one of the most expensive PC components. Usage the converted monitor will allow the radio amateur to independently component of an IBM-compatible PC and limited in funds, spend money first of all on purchasing “powerful” system unit. Over time, such a monitor will of course will need to be replaced with a more advanced one. Proposed revision of "Electronics MS 6106" regarding It’s simple and completely within the capabilities of even a novice radio amateur. All designations of elements are given according to the factory circuit diagram. The scan unit (SU) undergoes the greatest changes. First of all, it is necessary to increase the horizontal scanning frequency from 15 to 30 kHz. For this purpose, capacitor C27 (4700 pF) in the master generator is replaced with a capacitor of the same type with a capacity 2400 pF, and C41 (0.01 µF) in the output circuit is a capacitor the same type with a capacity of 2200 pF. R67 (3 Ohm) should also be replaced resistor with a resistance of 51 ohms. In order for personnelclock pulses from the input connector arrived at the personnel node scanner, jumper connecting pins 1 and 2 on the unit board, solder to pins 2 and 3. It is also advisable to replace the KD411BM (VD16) with two KD226D diodes connected in series (they more reliable) and connect the common wire of the block to the metal monitor chassis (this will eliminate possible bending of vertical lines in lines with long text). Refinement of the high voltage block (HVB) is reduced to removing (in order to adjust the BVH to a frequency of 30 kHz) capacitors C1 (6800 pF), C3 (1000 pF) and replacing R1 (3 Ohm) with a resistor resistance 27 Ohm. The latter is required for limitation the voltage at the anode of the kinescope is an acceptable value. To ensure correct linking of the main video signals colors to black level in all three channels A1-A3 of the block video amplifiers (BVU) replace capacitors C5 (0.01 μF) oxide, with a capacity of 15 μF with a rated voltage of at least 12 V (the terminals of their negative plates are connected to the common wire). And so that the horizontal sync pulses enter the node line scan independent of the video signal, jumper, connecting pins 2 and 3 on the BVU board, solder on pins 1 and 2. Finally, if necessary, adjust the convergence of the rays with using ring magnets on the neck of the kinescope, as well as focusing and geometric distortion of the raster by rotationengines of the corresponding trimming resistors. The redesigned video monitor works stably with most programs in MS DOS environment. For example, an image of panels the popular Norton Commander shell program is reproduced without color distortion and quite clearly. There are, however, some drawbacks to the monitor's operation: dimensions the images become slightly smaller (it takes approximately 2/3 of the screen area), due to which the resolution suffers ability. It should also be taken into account that the converted monitor is not can work with programs that use lowercase sync pulses of positive polarity (for example, with the program computer configuration WINBIOS from AMI). Image in In this case it is not synchronized. (c) "RADIO" N1, 2000 A. Novoselov. Alexander.