702550 / OTTOVERSAND [TV]

• SIF detector adjustment: image IF / fine adjustment automatic/ multiplex sound.
• No start-up. intermittently.
• Bell filter (T800) adjustment.
• Tries to start, LED changes briefly from red to green.
• SIF detector: T255 (fine adjustment).
• AFT detector T251 fine, Mother checker, adjustment.
• 38.9MHz adjustment.
• Sound level and separation adjustment. (702550 tip from OTTOVERSAND)
• The picture is purple.
• SIF - detector rough adjustment.
• P detector coil, T252, adjustment.
• Level control adjustment.
• Stretched picture.
• Clock oscilloscope (6.0 MHz): C3011.
• 5.5 MHz DET: T903 and 5.74 MHz DET:T905. (702550 tips)
• Pilot detector T906 adjustment.
• Adjustment of deflection loop (21" only).
• SIF detector rough adjustment.
• Sub-colour adjustment.
• At switch on, line transformer whistles. Dark screen, no sound, no EHT. (702550 OTTOVERSAND repair tip)
• Level control: R918, disconnection: R917.
• Sign position control adjustment.
• Screen control adjustment - CRT PWB unit. (702550 tip from OTTOVERSAND)
• Sub sound adjustment.
• At switch on the EHT rustles up for a second or so, then the relay switches off.
• Black band at bottom of screen. Impossible to remove with adjustments.
• Line output transistor and transformer dead.
• STEREO R929 and bilingual R930 adjustment.
• S trap adjustment.
• Sub-sound R1342 adjustment. (702550 OTTOVERSAND repair tip)
• Flickering picture. after a while (depending on picture content). (702550 OTTOVERSAND repair tip)
• Fails, will start up again with the RCU but then switches off again straight away.
• Screen control adjustment.
• White picture, blank raster.
• Adjusting the audio block: T254 and T256.
• Control detector adjustment.
• 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.
• 38,9MHz detector adjustment.
• No colour.
• Deflection loop adjustment - 25" and 28" only .
• P-detector coil T252 adjustment.
• At switch on appliance builds up high voltage for a short time and then switches off.
• SIF detector (T255) fine adjustment.
• Text switching board: level control.
• Driver control: R1874 and R1875.
• Switches to standby. after start-up.
• Line output transformer starts up then appliance switches to standby.
• Pilot detector adjustment.
• Black screen.
• Colour varies.
• Text level adjustment - Text PWB unit.
• +B R736 adjustment. (702550 tip from OTTOVERSAND)
• Sign position R2085 adjustment.
• Video/chroma setting: aux. colour control.
• Drive control R1874 and R1875 adjustment.
• Stereo R929, Bilingual R930 adjustment.
• Tuner IFT adjustment. (+ extract of circuit diagram)
• Clock oscilloscope 6.0MHz adjustment - Text PWB unit.
• Vertical fault.
• P detector coil: T252.
• Tuner IFT adjustment. (702550 tip from OTTOVERSAND)
• Setting the character position control. (with circuit diagram extract)
• Adjusting the control detector : picture IF/automatic fine tuning/ multiple sound.
• Video/chrome adjustment: bell filter. (part of circuit diagram displayed)
• AFT coil fine adjustment.
• RF AGC adjustment.
• +B, standby R714 adjustment.
• No response to Programme + or On/Off button.
• 5.5MHz detector and 5.74MHz detector adjustment.
• 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.
• Bell filter adjustment.
• Adjusting the screen control.
• 5.5MHz detector T903; 5.74MHz detector T905 adjustments.
• Stuck in standby.
• Dark picture. Audio OK .
• AFT detector rough adjustment.
• Adjusting the aux. colour control: R826.
• Deflection loop 21" only adjustment.
• No or intermittent start-up. Switches off by itself. intermittently.
• Colour flickers in SECAM.
• 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.
• Adjustment of the deflection loop. (extract of circuit diagram attached)
• Control detector:T906.
• SIF detector rough adjustment.
• AFT DET: T251.
• SECAM detector: (T801 and R805) adjustment.
• Sound trap adjustment.
• SIF detector T255 fine adjustment.
• SIF detector (fine adjustment) adjustment.
• Level - R918, Separation - R917 adjustment.
• No picture.
• Bell filter T800 adjustment.
• Adjustment of S trap.
• Audio level and separation adjustment.
• The sound decreases in volume after switching on.
• CRT board: driver control.
• +B (STAND BY) (R714) adjustment.
• RF AGC adjustment.
• Adjustment control for +B150V: R736.
• AFT-DET (T251) fine adjustment (Mother checker)
• Level R918 and separation R917 adjustment.
• Setting control for +B150V.
• Picture blurred in tuner or scart. Impossible to adjust with focus pot and G2.
• Shuts down.
• No signal (via tuner). Blank raster.
• Switches off by itself.
• Sign position R2085 adjustment.
• SIF detector fine adjustment.
• Power supply fails at start-up. Green Standby LED lit.
• SECAM Detector: T801 and R805.
• SIF - detector fine adjustment.
• Q602 (BU508) overheats for 30 secs.
• No picture. Sound ok. EHT, G2 ok. Sandcastle present with all voltages. (702550 OTTOVERSAND repair tip)
• Does not go into standby after Q701 has blown. Appliance starts up instantly.
• Red flyback lines, occasionally picture disappears.
• The sound on the left track does not function.
• AFT coil rough adjustment. (702550 tip from OTTOVERSAND)
• Sif detector: T255. (coarse adjustment)
• Power supply chokes when switched on from standby. TV switches back to standby.
• Setting the picture IF/ automatic fine tuning/ multiple audio: 5.5MHz detector and 5.74MHz detector.
• Adjusting the HF AVR: R263.
• Bell filter adjustment: T800.
• Green and blue drive adjustment.
• Stereo and bilingual adjustment: Image IF / fine adjustment automatic / multiple sound.
• Switching on the HF AGC. (702550 tips)
• Stereo: R929, bilingual: R930.
• Occasionally picture is distorted and then becomes slightly red.
• AFT coil fine adjustment.
• 5.5MHz DET: (T903), 5.74MHz DET: (T905) adjustment.
• Deflection loop adjustment - 25" and 28" only.
• Clock oscilloscope 6.0MHz C3011 adjustment. (OTTOVERSAND - 702550 information)
• Video/Chroma adjustment: Secam detector. (extract of circuit diagram attached)
• Line output transistor burnt.
• Stuck in standby (intermittently).
• Sub-colour adjustment.
• Adjusting the aux. noise control: R1342.
• At switch on, EHT is rustled up then goes off.
• Shuts down. after start-up.
• Picture would occasionally develop a red tint.
• Adjusting the 38.9 MHz detector : T902.
• Sub sound control adjustment . (service info for OTTOVERSAND -702550)
• Screen control adjustment - CRT PWB unit.
• Sub-colour adjustment.
• +B 113V adjustment.
• Adjusting the aux noise control.
• RF-AGC adjustment.
• P-detector coil adjustment. (702550 tip from OTTOVERSAND)
• Deflection loop adjustment.
• STEREO R929 bilingual R930 adjustment.
• AFT DET (Automatic Frequency Tuning Detector) rough adjustment.
• Character position control: R2085.
• Setting control for +B150V.
• Clock oscillator (6.0MHz) adjustment. (702550 tips)
• Erratic start-up.
• Sign position control adjustment.
• Level R3066 adjustment.
• Text level adjustment - Text PWB unit.
• Deflection loop adjustment - 21" only. (702550 tips)
• RF AGC adjustment.
• CLOCK oscilloscope (6.0MHz): C3011 adjustment.
• SIF (Sound IF) detector rough adjustment.
• Appliance goes to stand by after 0.5 secs. It can be switched on again for 0.5 secs.
• Distorted audio.
• Fails and directly afterwards can be switched on again.
• No HV.
• Reduced vertical size.
• Text switching board: clock oscilloscope
• Pilot detector adjustment.
• CRT board: screen control.
• Tuner IF transformer coil.
• 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.
• S trap T254 and T256 adjustment.
• Intermittently top two thirds of picture develops red tint.
• 38.9MHz detector adjustment.
• TXT signal improvement.
• Bell filter adjustment.
• Tuner IFT adjustment.
• Setting the picture IF/automatic fine tuning/multiple sound: IF transformer of the tuner. (extract of circuit diagram attached)
• No brightness.
• S TRAP (T254 and T256) adjustment.
• Level control and separation adjustment: image IF / fine adjustment automatic / multiplex sound.
• Slow start-up. No picture. No audio.
• 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.
• Tuner IFT adjustment.
• Remains in standby. If relay RY701 forced, TV switches on, only screen remains white as if it were in AV.
• Adjusting the 38.9MHz detector. Picture IF/automatic fine tuning/ multiple sound. (702550 tips)
• Switches to standby (intermittently).
• Clock oscilloscope 6.0MHz adjustment - Text PWB unit. (service info for OTTOVERSAND -702550)
• P-detector coil adjustment.
• Stereo, bilingual adjustments.
• Level control : R3066. (service info for OTTOVERSAND -702550)
• Poor TXT reception, picture is blue/purple.
• Sub-colour adjustment.
• Sub-sound (R1342) adjustment.
• Setting the picture IF/automatic fine tuning/multiple sound: SIF detector (fine adjustment). (picture attached)
• Adjusting the deflection coil. (702550 OTTOVERSAND repair tip)
• Setting the picture IF/ automatic fine tuning/ multiple audio: audio locking device. (part of circuit diagram displayed)
• Adjustment of deflection loop (25" 28" only).
• Screen control adjustment.
• Sub-sound adjustment.
• No audio.
• No start-up. LED lit. .
• Pilot detector adjustment.
• Screen control adjustment. (service info for OTTOVERSAND -702550)
• P-detector coil T252 adjustment.
• 5.5MHz detector T903 and 5.74MHz detector T905 adjustment.
• Green and blue drive adjustment.
• Purple picture
• Sub colour control adjustment.
• Distorted picture at the top, chattering in the appliance, picture runs through sometimes. (702550 tip from OTTOVERSAND)
• Bell filter adjustment.
• Level R3066 adjustment.
• Picture rolls. after a few hours.
• Stereo (R929) - bilingual (R930) adjustment.
• Level control and separation adjustment.
• Setting the picture IF/ automatic fine tuning/multiple audio: P detector coil. (extract of circuit diagram attached)
• +B 113V adjustment - mother unit. (702550 tip from OTTOVERSAND)
• Picture becomes intermittently dark and faint. Flyback lines.
• AFT detector T251 rough adjustment.
• RF- AGC R263 adjustment.
• Deflection loop adjustment.
• No start-up (when cold). (702550 tips)
• No picture. via SCART.
• SIF detector T255 rough adjustment.
• 5.5MHz and 5.74MHz detectors adjustment.
• 38.9MHz detector T902 adjustment.
• +B adjustment.
• 38.9MHz detector T902 adjustment.
• Drive control R1874 and R1875.
• Drive control adjustment.
• AFT coil rough adjustment.