69VR20 / MEDIATOR [Video recorder - VHS HiFi]

• No start-up. (with circuit diagram extract)
• Picture jumps during still-picture.
• Picture IF setting. (+ extract of circuit diagram) (69VR20 MEDIATOR repair tip)
• Adjusting the PB pulse for audio. (with circuit diagram extract)
• In Hifi no correct channel spacing possible and audio is provided with an echo, especially in channel 2. (+ extract of circuit diagram)
• Drive malfunctions.
• Playback is noisy. (with circuit diagram extract)
• The timer display is dark, no drive function possible. (69VR20 tip from MEDIATOR)
• The picture is poor during playback. (with circuit diagram extract)
• Noise suppression time constant adjustment. (+ extract of circuit diagram)
• Shuts down (intermittently).
• During PB a crackling noise can be heard in the HiFi sound.
• Sound drifts occasionally and interference stripes in the picture. Temperature sensitive. (extract of circuit diagram attached)
• No AV operation possible.
• Sound drones loudly, especially when using as a HiFi audio tape in the highest frequencies.
• No function or strange functions. (picture attached)
• Dead.
• Adjusting the supply voltage +5V. (+ extract of circuit diagram)
• No sound. Sound only starts after some time.
• The right audio level display does not function. (part of circuit diagram displayed)
• Capstan does not run. (with circuit diagram extract) (MEDIATOR - 69VR20 information)
• Function display is dark, DEW flashes, head drum motor also runs without a cassette inserted. No drive functions.
• The appliance does not function (the display is dark). (+ extract of circuit diagram)
• EE sound and PB sound is strongly distorted and too quiet. (part of circuit diagram displayed)
• Adjusting the clock frequency (operating unit). (part of circuit diagram displayed)
• After approx 2 sec. the appliance switches off and no other function is possible.
• No HiFi REC. No Hifi PB.
• Various system faults, including dew light on. (extract of circuit diagram attached)
• HiFi sound ok but HiFi tracking level drops when warm. (69VR20 tips)
• After plugging in the mains plug the auxiliary indication and the tape counter lights up shortly (approx.2sec). The display remains dark.
• Checking the +12V voltage. (+ extract of circuit diagram)
• Appliance cannot be switched on. Display functions occasionally. Drive has no function. (extract of circuit diagram attached) (69VR20 tip from MEDIATOR)
• Head amplifier maximum frequency adjustment. (+ extract of circuit diagram)
• No functions and tape ejected.
• Capstan motor runs jerkily and therefore the sound oscillates. (+ extract of circuit diagram) (69VR20 tips)
• Eject does not function intermittently.
• IF filter adjustment. (+ extract of circuit diagram)
• The tape gets stuck. (with circuit diagram extract)
• Appliance cannot be switched on, the clock runs.
• Modification for the purpose of "simultaneous" recording. (service info for MEDIATOR -69VR20)
• Head amplifier frequency response adjustment. (with circuit diagram extract)
• No picture, sound and recording fine. (extract of circuit diagram attached)
• The function display is intermittent after 10 minutes. (with circuit diagram extract)
• No function. The DEW blinks in the display, the clock is off and the capstan and the drum motors occasionally start up. (picture attached)
• Sometimes the picture is intermittent.
• Adjusting the amplifier. (with circuit diagram extract)
• Adjusting the audio level (main channel). (+ extract of circuit diagram)
• No RF-RF or E-E switching. (69VR20 tips)
• No EE signals. (with circuit diagram extract) (69VR20 tip from MEDIATOR)
• Adjusting the audio level (stereo). (picture attached)
• During playback, the appliance constantly switches from Hifi to normal playback. (part of circuit diagram displayed)
• Adjusting the switching off voltage (timer). (part of circuit diagram displayed)
• Short circuit in the power supply.
• No sound through the AV socket. The sound is present through LF and line out. (MEDIATOR - 69VR20 information)
• Memory loss with mains interruption.
• Adjusting the channel equality with automatic drive. (picture attached)
• No channel storing. (+ extract of circuit diagram)
• Totally dead after a mains interruption.
• On ejecting a cassette a loop of tape is left outside the cassette.
• Adjusting the position of the head switch over pulse (servo part). (+ extract of circuit diagram)
• No stereo level display. (part of circuit diagram displayed)
• Adjusting the Secam killer. (picture attached)
• The appliance does not accept a cassette (dead). (part of circuit diagram displayed)
• No main loading motor, also dead after 3 secs with main mechanism not reseting ie no mechanical movement.
• AFC adjustment. (part of circuit diagram displayed)
• Record lights up but does not function. (picture attached)
• Adjusting the audio signal generator.
• Capstan motor runs back and forth.
• Adjusting the audio selection filter. (picture attached)
• Adjusting the audio REC current. (picture attached)
• Colour fails during PB.
• The Hifi sound is constantly muted. (+ extract of circuit diagram)
• Flashing display.
• Loss of capstan torque. (with circuit diagram extract)
• No DD motor rotation. (part of circuit diagram displayed)
• Adjusting the pilot signal stage. (part of circuit diagram displayed)
• Lines in picture.
• Adjusting the REC level.
• No colour in PB. (with circuit diagram extract)
• No station can be received, sound makes a very loud noise.
• Appliance does not switch on or off. Clock is dark.
• During PB only sound playback and the EE picture is still visible. (+ extract of circuit diagram)
• No hifi and normal sound selection.
• Adjusting the FM carrier frequencies. (with circuit diagram extract) (service info for MEDIATOR -69VR20)
• Wavy lines in the picture. (69VR20 tip from MEDIATOR)
• Faint colours. Line pairing of the colours. When using test picture colour flashes appear to the left and right of the circle.
• Adjusting the audio PB level. (+ extract of circuit diagram)
• Adjusting the tracking. (with circuit diagram extract) (69VR20 tip from MEDIATOR)
• No picture (in E-E).
• No function, appliance displays "d". (part of circuit diagram displayed)
• The display flickers. (with circuit diagram extract)
• Noise on the hifi sound, no normal or hifi selection possible, the head is in order. (with circuit diagram extract)
• Power supply defective.
• No multi function display. (extract of circuit diagram attached)
• Audio level indicator does not work. (69VR20 tips)
• Adjusting the pulse position for still picture (2). (extract of circuit diagram attached)
• Checking the video level and adjusting the burst amplitude. (picture attached)
• DEW indication illuminates from time to time and without reason and the operating functions block. (picture attached)
• Two fluorescents not working. No clock or function display. Hi-Fi display OK.
• No function, appliance does not start with VTR on. (+ extract of circuit diagram) (MEDIATOR - 69VR20 information)
• All display lights up, then unit turns off.
• In stereo programmes stereo lights up but is not recorded. Even in EE mode TV does not display stereo.
• Adjusting the pulse position for still picture (1). (+ extract of circuit diagram) (service info for MEDIATOR -69VR20)
• Horizontal instability on playback picture with verticals distorted. (MEDIATOR - 69VR20 information)
• Clock fails after 3 mins. Timer does not function. (+ extract of circuit diagram)
• No function, the tape remains in the appliance.
• No picture, only noise.
• Horizontal twitching on picture.
• Noise suppression value adjustment. (with circuit diagram extract)
• Adjusting the muting. (picture attached)
• The colour signal is delayed picture is too bright. (69VR20 tips)
• Will not OTR or timer record. (picture attached)
• No tuning. (with circuit diagram extract)
• Appliance does not function, no clock and timer function. (picture attached)
• Sound is very loud.
• After plugging in the mains plug, the appliance operates for a short time and then switches off.
• Adjusting the reset voltage (timer). (extract of circuit diagram attached)
• Cassette accepted and laced up until stop position, afterwards however part is unlaced immediately. Switches off and blocks.
• Power supply does not always start up.
• LEDs flash.
• Drive revision.
• Adjusting the REC current. (extract of circuit diagram attached)
• Adjusting the stereo disconnection. (extract of circuit diagram attached)
• Adjusting the selection coils. (+ extract of circuit diagram)
• Capstan running at incorrect speed. (part of circuit diagram displayed)
• Occasionally DEW indication lights up and control functions block. (extract of circuit diagram attached) (service info for MEDIATOR -69VR20)
• The display is dark, no functions are possible.
• Intermittently drum motor stops in PB and REC mode. (extract of circuit diagram attached)
• Adjusting to hum minimum. (part of circuit diagram displayed) (MEDIATOR - 69VR20 information)
• During play and winding the capstan turns jerkily back and forth. (with circuit diagram extract) (service info for MEDIATOR -69VR20)
• No functions. (+ extract of circuit diagram)