702551 / OTTOVERSAND [TV]

• Driver control: R1874 and R1875.
• Sub-colour adjustment.
• Switches to standby (intermittently).
• Sub-colour adjustment. (OTTOVERSAND - 702551 information)
• P detector coil: T252.
• Setting the picture IF/automatic fine tuning/multiple sound: SIF detector (fine adjustment). (with circuit diagram extract)
• Adjusting the aux. colour control: R826.
• Level R3066 adjustment.
• +B (STAND BY) (R714) adjustment.
• Adjusting the audio block: T254 and T256.
• Green and blue drive adjustment.
• Drive control R1874 and R1875.
• P-detector coil adjustment.
• Intermittently top two thirds of picture develops red tint.
• Stereo R929, Bilingual R930 adjustment.
• Poor TXT reception, picture is blue/purple.
• No brightness.
• Colour varies.
• SIF detector rough adjustment.
• SIF detector adjustment: image IF / fine adjustment automatic/ multiplex sound.
• No start-up (when cold).
• When switching on the TV, a yellow picture with faint flyback lines from left to right appears for the first 15 minutes. Then the picture is fine.
• AFT DET: T251. (702551 tips)
• The sound decreases in volume after switching on.
• Text level adjustment - Text PWB unit.
• Stretched picture.
• Level - R918, Separation - R917 adjustment.
• Slow start-up. No picture. No audio.
• Clock oscilloscope (6.0 MHz): C3011.
• SIF detector (T255) fine adjustment.
• 38.9MHz adjustment. (service info for OTTOVERSAND -702551)
• Deflection loop adjustment.
• Clock oscilloscope 6.0MHz C3011 adjustment.
• S trap adjustment.
• Sub-sound R1342 adjustment.
• 5.5MHz detector T903 and 5.74MHz detector T905 adjustment. (702551 tips)
• Green and blue drive adjustment.
• Red flyback lines, occasionally picture disappears. (OTTOVERSAND - 702551 information)
• 5.5MHz DET: (T903), 5.74MHz DET: (T905) adjustment.
• Adjustment of deflection loop (25" 28" only).
• AFT detector rough adjustment.
• Video/Chroma adjustment: Secam detector. (extract of circuit diagram attached)
• 5.5 MHz DET: T903 and 5.74 MHz DET:T905.
• 38.9MHz detector T902 adjustment.
• Setting the picture IF/ automatic fine tuning/ multiple audio: 5.5MHz detector and 5.74MHz detector.
• Appliance goes to stand by after 0.5 secs. It can be switched on again for 0.5 secs.
• AFT detector T251 rough adjustment.
• Text level adjustment - Text PWB unit.
• Adjusting the aux. noise control: R1342. (OTTOVERSAND - 702551 information)
• SECAM Detector: T801 and R805.
• Picture becomes intermittently dark and faint. Flyback lines. (702551 OTTOVERSAND repair tip)
• Shuts down.
• Clock oscilloscope 6.0MHz adjustment - Text PWB unit.
• Setting the picture IF/ automatic fine tuning/ multiple audio: audio locking device. (picture attached)
• SIF - detector fine adjustment.
• Sub-colour adjustment.
• S TRAP (T254 and T256) adjustment.
• Fails and directly afterwards can be switched on again.
• Remains in standby at start up. If start up is selected by the start button the green light comes on for 3 secs then goes back to standby.
• Switching on the HF AGC.
• Pilot detector adjustment.
• The sound on the left track does not function.
• Clock oscillator (6.0MHz) adjustment.
• No picture.
• Adjusting the 38.9MHz detector. Picture IF/automatic fine tuning/ multiple sound.
• At switch on appliance builds up high voltage for a short time and then switches off.
• Sign position R2085 adjustment.
• SIF detector (fine adjustment) adjustment.
• AFT-DET (T251) fine adjustment (Mother checker)
• AFT coil rough adjustment.
• Video/chroma setting: aux. colour control.
• At switch on, EHT is rustled up then goes off.
• Shuts down. after start-up.
• At switch on the EHT rustles up for a second or so, then the relay switches off.
• SECAM detector: (T801 and R805) adjustment.
• Line output transistor burnt.
• No start-up. intermittently.
• RF AGC adjustment.
• +B 113V adjustment.
• Sub colour control adjustment.
• Line output transistor and transformer dead.
• Stuck in standby.
• Pilot detector adjustment.
• No picture. Sound ok. EHT, G2 ok. Sandcastle present with all voltages.
• Switches off by itself.
• Remains in standby. If relay RY701 forced, TV switches on, only screen remains white as if it were in AV.
• SIF (Sound IF) detector rough adjustment.
• Colour flickers in SECAM.
• AFT coil rough adjustment.
• Setting the picture IF/ automatic fine tuning/multiple audio: P detector coil. (with circuit diagram extract)
• Control detector:T906.
• Flickering picture. after a while (depending on picture content).
• +B adjustment.
• Pilot detector T906 adjustment.
• Adjustment of deflection loop (21" only).
• Stereo (R929) - bilingual (R930) adjustment.
• Level control and separation adjustment: image IF / fine adjustment automatic / multiplex sound.
• No audio. (OTTOVERSAND - 702551 information)
• Level control adjustment.
• Adjusting the screen control.
• Pilot detector adjustment.
• Screen control adjustment.
• Adjusting the aux noise control.
• Bell filter adjustment: T800.
• Sound level and separation adjustment. (OTTOVERSAND - 702551 information)
• SIF detector fine adjustment.
• No picture. via SCART.
• Tries to start, LED changes briefly from red to green.
• Deflection loop adjustment - 21" only.
• SIF detector: T255 (fine adjustment).
• Screen control adjustment - CRT PWB unit. (702551 tips)
• Tuner IFT adjustment.
• RF-AGC adjustment.
• Video/chrome adjustment: bell filter. (picture attached)
• No HV. (service info for OTTOVERSAND -702551)
• P-detector coil T252 adjustment.
• Control detector adjustment.
• White picture, blank raster.
• SIF detector rough adjustment.
• Drive control R1874 and R1875 adjustment.
• +B 113V adjustment - mother unit.
• S trap T254 and T256 adjustment.
• SIF detector T255 fine adjustment.
• Screen control adjustment.
• 38.9MHz detector adjustment.
• Bell filter adjustment.
• Sub sound control adjustment .
• Sub sound adjustment.
• Screen control adjustment - CRT PWB unit. (702551 tips)
• Fails, will start up again with the RCU but then switches off again straight away.
• Picture rolls. after a few hours.
• STEREO R929 and bilingual R930 adjustment.
• Line output transformer starts up then appliance switches to standby.
• Reduced vertical size.
• AFT coil fine adjustment.
• CLOCK oscilloscope (6.0MHz): C3011 adjustment.
• Setting the picture IF/automatic fine tuning/multiple sound: IF transformer of the tuner. (+ extract of circuit diagram)
• Bell filter adjustment.
• Sub-colour adjustment.
• AFT coil fine adjustment.
• Stereo: R929, bilingual: R930. (702551 tip from OTTOVERSAND)
• Stereo and bilingual adjustment: Image IF / fine adjustment automatic / multiple sound.
• P detector coil, T252, adjustment. (702551 tip from OTTOVERSAND)
• Black band at bottom of screen. Impossible to remove with adjustments. (702551 tips)
• Black screen.
• P-detector coil T252 adjustment.
• Sign position R2085 adjustment. (702551 OTTOVERSAND repair tip)
• Erratic start-up.
• No or intermittent start-up. Switches off by itself. intermittently.
• Bell filter (T800) adjustment.
• 5.5MHz and 5.74MHz detectors adjustment.
• No signal (via tuner). Blank raster.
• Clock oscilloscope 6.0MHz adjustment - Text PWB unit.
• Purple picture
• Stereo, bilingual adjustments.
• Level control: R918, disconnection: R917.
• Adjustment control for +B150V: R736.
• CRT board: driver control.
• Adjustment of the deflection loop. (picture attached)
• Deflection loop adjustment - 25" and 28" only.
• SIF - detector rough adjustment.
• Tuner IFT adjustment. (702551 tips)
• Picture at first is too dark then there is too much green in picture then it becomes normal. Colour output stage IC reacts to cooling spray.
• Level control : R3066.
• Distorted audio.
• Setting the character position control. (picture attached) (702551 tips)
• Power supply fails at start-up. Green Standby LED lit.
• AFT detector T251 fine, Mother checker, adjustment.
• Level R3066 adjustment.
• Tuner IFT adjustment. (702551 OTTOVERSAND repair tip)
• Does not go into standby after Q701 has blown. Appliance starts up instantly.
• Adjusting the control detector : picture IF/automatic fine tuning/ multiple sound.
• No colour.
• Setting control for +B150V.
• Sign position control adjustment.
• Sign position control adjustment. (702551 tips)
• Sif detector: T255. (coarse adjustment)
• Power supply chokes when switched on from standby. TV switches back to standby. (service info for OTTOVERSAND -702551)
• Tuner IF transformer coil.
• No response to Programme + or On/Off button.
• Does not start up from power button. By forcing Q705 the power supply starts up but buttons do not work. On 22 of IC2001 1.6V instead of 5V, 1.6V on the emitter of Q706 and 2.62 on the base. 10V on R745 and R748.
• Deflection loop adjustment - 25" and 28" only .
• TXT signal improvement.
• Occasionally picture is distorted and then becomes slightly red.
• The picture is purple.
• Distorted picture at the top, chattering in the appliance, picture runs through sometimes.
• Screen control adjustment.
• Text switching board: clock oscilloscope (service info for OTTOVERSAND -702551)
• P-detector coil adjustment.
• Stuck in standby (intermittently).
• Adjusting the 38.9 MHz detector : T902.
• Drive control adjustment.
• Deflection loop 21" only adjustment.
• Adjusting the HF AVR: R263.
• 38,9MHz detector adjustment.
• Sub-sound adjustment.
• Dark picture. Audio OK .
• Q602 (BU508) overheats for 30 secs.
• RF- AGC R263 adjustment.
• Bell filter T800 adjustment.
• Picture would occasionally develop a red tint. (OTTOVERSAND - 702551 information)
• Adjustment of S trap.
• Bell filter adjustment.
• +B, standby R714 adjustment.
• AFT DET (Automatic Frequency Tuning Detector) rough adjustment.
• CRT board: screen control.
• +B R736 adjustment.
• STEREO R929 bilingual R930 adjustment.
• The first time the CTV goes into safety mode. Repaired solder joint on D712. The second time, CTV seems to start up but the line transformer whistles after 10 seconds and no EHT.
• Sound trap adjustment.
• RF AGC adjustment.
• 5.5MHz detector T903; 5.74MHz detector T905 adjustments.
• No start-up. LED lit. . (702551 tips)
• Tuner IFT adjustment. (with circuit diagram extract)
• Vertical fault.
• Sub-sound (R1342) adjustment.
• 38.9MHz detector T902 adjustment.
• Deflection loop adjustment.
• At switch on, line transformer whistles. Dark screen, no sound, no EHT.
• Level R918 and separation R917 adjustment. (service info for OTTOVERSAND -702551)
• SIF detector T255 rough adjustment.
• Switches to standby. after start-up.
• Character position control: R2085.
• Setting control for +B150V.
• Picture blurred in tuner or scart. Impossible to adjust with focus pot and G2.
• Audio level and separation adjustment. (702551 OTTOVERSAND repair tip)
• Level control and separation adjustment.
• RF AGC adjustment.
• Adjusting the deflection coil.
• 5.5MHz detector and 5.74MHz detector adjustment.
• Text switching board: level control. (702551 OTTOVERSAND repair tip)