CX5012Z / SAMSUNG [TV]

• HT is too high.
• No power up, just strange noise from power supply.
• Audio mute and intermittent channel.
• Picture blanks, sound ok and text ok.
• No TXT.
• Arcing inside PSU.
• Defect in the horizontal linearity stage.
• White picture with flyback lines.
• Top linearity is defective.
• Vertical foldover at top.
• Intermittent luma/chroma faults.
• Screen only lights up intermittently.
• No standby. No start up.
• PSU chirps. at start-up.
• Non-linear field scan. Cramped at bottom and stretched at top.
• Stuck in standby.
• Reduced horizontal size. Burning smell.
• Blank raster. Flyback lines.
• No picture. (CX5012Z tips)
• Frame collapse of approx. 1.5".
• Very low audio.
• Red flyback lines in picture.
• Attempts to start up. Noise from PSU.
• Line frequency is too high.
• PSU whistles. Shuts down.
• Blank raster. No audio. No front panel function. No RC functions. (CX5012Z tip from SAMSUNG)
• Reduced vertical size.
• When power is turned on makes a squealing noise and the LED goes out. (service info for SAMSUNG -CX5012Z)
• Intermittently picture blanks. Sound OK. TXT OK. Picture comes back after TXT selected.
• No start-up.
• Needs to be degaussed quite often.
• Dead or intermittently dead.
• Excessive HV.
• Switches back to channel 1 instantly when trying to change channel, then no function and no standby indicator.
• No audio.
• Appliance is dead or trips, standby LED does not light up.
• Audio interference at switch over and scene change despite adjusting the volume.
• Signs of a burn up in the line output stage. (CX5012Z tip from SAMSUNG)
• No picture. via AV. Audio OK .
• Raster is white and blank, sound is missing.
• Mains fuse (3.15A) or surge limiter resistor R601 (5R6/7.5W) O/C.
• Not switching between CVBS and AV mode.
• No colour.
• No start-up. Standby LED does not light.
• Set shuts down intermittently. Eventually standby light just pulses on & then off. Set will not come on. (CX5012Z tip from SAMSUNG)
• No picture. Audio OK .
• Dead or goes dead.
• Comes on in standby mode. (SAMSUNG - CX5012Z information)
• PSU tripping or volts low.
• At random intervals picture blanks leaving sound and a dark raster.
• With some appliances AGC distortion occurs in lower range of VHF band.
• Ragged verticals, intermittent.
• Randomly the picture blanks, leaving sound and a dark raster. Pressing the text button brings up a text display, then pressing the return to TV button restores the picture.
• Vertical collapse. (CX5012Z SAMSUNG repair tip)
• No start-up. Standby LED flashes .
• Dark picture.
• Only noise. No station tuning. (service info for SAMSUNG -CX5012Z)
• Trips. after a few seconds.
• Picture too big. (service info for SAMSUNG -CX5012Z)
• Bright picture. Flyback lines. (SAMSUNG - CX5012Z information)
• Whitish screen. Sound and OSD OK. (SAMSUNG - CX5012Z information)
• Chirping. at start-up.
• Chirping PSU that switches off. No standby light. (CX5012Z tips)
• Standby light flashes once when turned on, otherwise dead. PSU makes low twittering sounds. Can also be intermittent no go, with twittering sounds coming from psu when in standby.
• Weak contrast.
• Blank screen. No TXT. intermittently.
• Poor luminance.
• No functions. Squealing from PSU. (SAMSUNG - CX5012Z information)
• At switch on standby LED is lit for few seconds then goes off.
• Reduced contrast and brightness.
• No picture or sound in TV mode. AV mode ok.
• Intermittently stops. after warm-up.
• Does not switch to standby.
• Attempts to start up, a whistle can be heard, but does not switch on.
• Black screen.
• No video or luma overload when using Amiga.
• No picture. No audio. Standby LED flashes .
• Volume control at max.
• No HF reception.
• Blue screen. Flyback lines. (CX5012Z tip from SAMSUNG)
• Blank raster. intermittently. Flyback lines.
• No response to RC station commands.
• Crackling audio.
• No picture, only OSD available.
• Picture too wide, then switches to standby.
• Chopper transistor hisses in standby.
• No picture brightness/control of the video amplifier when connecting an Amiga computer.
• Horizontal output transistor Q402 (2SD1651) becomes defective after short operation. (CX5012Z SAMSUNG repair tip)
• Arcing. Dead. after a few seconds.
• Smoked then dead.
• Searches for channels continuously.
• Dead.
• Appliance will not produce signals (tuning voltages shows that it swept, but no station is found).
• Transistor Q402 fails (no high voltage).
• Channel numbers on front control panel light up.
• Deflection collapses. (CX5012Z tips)
• White screen.
• Reduced vertical size and compressed at bottom.
• Appliance does not switch between the TV- and AV mode.
• White raster with flyback lines when first switched on.
• Shuts down. intermittently.
• Picture linearity fault, picture shifted at top and stretched at bottom.
• When switched off, makes squelching noise and LED goes out.
• Dry joints.
• No power up from cold.
• Vertical foldover in cold conditions. After warming up, it corrects by itself. (CX5012Z tip from SAMSUNG)
• Picture is too big with occasional arcing. HT is high.
• Ticking noise. Tripping.
• Repeated failure of Q402.
• In soak mode the following resistors change their value.
• Intermittently impossible to switch on, especially when warm. Standby LED only lights up after trying to switch on for a while.
• Poor vertical linearity.
• No RC functions.
• Image has normal brightness only after 2 minutes after turning on.
• Failure of Q402.