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CT5510K / WALTHAM [TV 55 (51) cm picture]

The EURAS repair tip database for professional technicians and service engineers supplies the following faults for CT5510K / WALTHAM.

List of fault symptoms:
  • Floating moire-effect distortion around CRT.
  • Standby LED is red and TV trips. LED flickers when trying to start up.
  • Starts up briefly. LED is alight.
  • Horizontal lines have notches (mouse teeth).
  • Stuck in security. (CT5510K WALTHAM repair tip)
  • Goes to standby immediately after switch on.
  • Tube overfeeds. Flyback lines.
  • Switches to standby. after a few seconds. (CT5510K tip from WALTHAM)
  • PSU fails.
  • Geometry adjustment. (CT5510K tip from WALTHAM)
  • Stuck in standby. LED is red .
  • LED is green after start up, squeaking.
  • Slightly distorted picture. Slowly runs from the top to the bottom or gets stuck. Sound is slightly distorted.
  • Ripple on screen.
  • Control keys do not function. (CT5510K tip from WALTHAM)
  • Shuts down for a sec. Standby LED also switches down for a sec.
  • Standby only, does not switch on via RC or control unit. Red LED flashes.
  • No front panel function.
  • At switch on blank raster, timer counts back from 5 min and set switches off.
  • No picture. Noise in picture. No tuning.
  • How to enable PAL standard for UK use.
  • Ticking noise. in standby.
  • PSU pulsates. Red LED blinks.
  • No vertical deflection.
  • Switches to standby. intermittently.
  • No start-up from standby.
  • Shuts down after start-up. HT heard.
  • Total failure, PSU pumps.
  • No start-up. LED is green.
  • PSU pulsates. LED is green. Tripping. after start-up.
  • Line output transistor fails repeatedly.
  • Dead. LED is red . (service info for WALTHAM -CT5510K)
  • No E/W correction.
  • LED remains red with a slight flickering at start-up. If it starts up, PSU transformer whistles.
  • Black screen.
  • Picture height only approx. 15cm and compressed at the bottom. (service info for WALTHAM -CT5510K)
  • No start-up.
  • No functions. at start-up. LED blinks .
  • Blue disc capacitor C812 blown.
  • No picture. via SCART. Audio OK .
  • Picture is red, bright parts have a bluish tint.
  • PSU drops out.
  • White horizontal line in the middle of the picture.
  • PSU pulsates. LED is dark. (service info for WALTHAM -CT5510K)
  • Picture shifted vertically.
  • No audio. via AV.
  • Q801 is defective.
  • No TXT. No switch-over, page number is displayed but no picture content.
  • Vertical collapse.
  • Shuts down. after start-up.
  • No sound, no picture. Appliance is pumping regularly and green LED flashes briefly.
  • Can be switched on via RC or PR +- on appliance only after several attempts.
  • Line tearing. (WALTHAM - CT5510K information)
  • No picture. after a few minutes.
  • Slow start-up. when cold.
  • Tripping. Red LED blinks.
  • No functions. LED is red .
  • Enter service mode. (service info for WALTHAM -CT5510K)
  • No or poor picture.
  • Line output transistor fails repeatedly. after a few minutes.
  • Reduced vertical size.
  • Distorted and wavy picture. No AV input. AV output ok.
  • Switches to protection mode.
  • No start-up. Red LED blinks.
  • Excessive brightness. (WALTHAM - CT5510K information)
  • No start-up. LED lit. .
  • No display.
  • Tripping. LED blinks .
  • Q603 (BU808DFI) overheats. (CT5510K tips)
  • Clicking noise.
  • Line output transistor Q603 (BU808) breaks down after 1hour runtime. (service info for WALTHAM -CT5510K)
  • Switches to standby. at start-up.
  • No horizontal synchronisation (intermittently). Switches to standby.
  • Standby LED starts to flash after switch on.
  • R809 (0R47) defective and Q801 (P3NA60) s/c.
  • Only a horizontal line or no picture.
  • No sound. Installation menu cannot be called up.
  • Line output stage BU808DFI is defective.
  • No line drive pulses.
  • No HV.
  • Excessive horizontal size.
  • Dark picture (intermittently).
  • Excessive vertical size.
  • Low audio.
  • Noise on sound via HF. OK via AV.
  • Vertical foldover. after warm-up.
  • Dead. Standby LED flashes .
  • Difficoult startup when cold, LED flashes and goes back to standby.
  • No picture. LED is green.
  • LED flashes green/red after switch on.
  • PSU ticking. Red LED blinks.
  • No function. PSU works without a fault in protection mode.
  • Standby is lit, cannot be switched on. Smells burnt.
  • No start-up. Red LED lit and blinks when button CH (+) or RC is pressed. No green LED.
  • Clicking noise. in standby.
  • No function, LED faintly flashes green, smells burnt.
  • Horizontal lines.
  • Dead.
  • Ticking noise.
  • PSU pulsates.
  • Flashing picture. (CT5510K WALTHAM repair tip)
  • No HV after diode D805.
  • Vertical foldover at top.
  • Green LED is lit at switch on via RC, otherwise no function.
  • Stuck in standby. Red LED turns green for a sec when trying to turn on.
  • Venetian blind effect.
  • PSU pulsates. at start-up.
  • Tripping.
  • No HV. Green LED flashes . (service info for WALTHAM -CT5510K)
  • BU808 fails after an hour.
  • No start-up. LED is red .
  • Dead. LED lights dimly. (WALTHAM - CT5510K information)
  • Horizontal line and approx 5 cm picture content.
  • Excessive horizontal size. Pincushion distortion.
  • Dead. Standby LED does not light.
  • No OSD. Picture foldover. Bad linearity.
  • Loud noise. in standby.
  • Vertical fault. Picture is only 5cm high (from the middle of the picture to the bottom).
  • Switches to standby. after start-up.
  • When stopping TV via RC, diode stays green and doesn't get red. Picture and sound are OK in standby but line transformer makes a fluttering noise. When restarting via RC, picture, sound and functions are OK. (WALTHAM - CT5510K information)
  • Dead. Green LED flashes .
  • Noise in standby.
  • Slow start-up.
  • Bright raster. Flyback lines.
  • Disable hotel mode.
  • No picture. (service info for WALTHAM -CT5510K)
  • No audio. Crackling audio. via speakers.
  • No horizontal deflection.
  • No HV. Audio OK .
  • Picture slightly wider than normal. No vertical amplitude. Picture and sound intermittent drop out. (service info for WALTHAM -CT5510K)
  • No start-up. LED becomes green briefly, then reverts to red.
  • No PSU or pumps.
  • No picture. Green LED flickers when trying to start up.
  • PSU trips, pumps after switch on.
  • Variation of PSU voltages.
  • Starts up immediately in protective switching. (Pumps.)
  • Changes the channel after approx. 10 min. on the program site. Switches off when calling up the menu, returns with OSD shifted to the left.
  • No picture. Audio OK .
  • No start-up from standby. Red LED blinks. (CT5510K tips)
  • No functions. LED blinks .
  • Stuck in standby. LED is green then red.
  • No raster. (WALTHAM - CT5510K information)
  • No start-up. LED blinks .
  • Trips.
  • No picture. OK via SCART .
  • Line BU fails after approx.10-20 min.
  • PSU does not start up. LED flashes red/green.
  • Line output transistor fails repeatedly. after a while.
  • Poor picture. Intermittent colour. Flashing picture.
  • E/W fault.
  • No functions.
  • No function, standby OK. LED lights green for a short time, then becomes red again.
  • PSU Blown.
  • Stuck in standby. Red LED flashes for a short while.
  • Stuck in standby. Tripping.
  • Goes to standby automatically every 5 min.
  • No channels.

When WALTHAM CT5510K fails , these symptoms are known and EURAS knows the remedy/solution.

Tips are coming from EURAS customers, workshops and payed technicians from all over the world. WALTHAM CT5510K fails can be better solved.

If WALTHAM CT5510K fails, this information will help you. Here you can only see the symptom list, to access remedies, you must register.

With help of this list a solution is found often when WALTHAM CT5510K fails.


Additionally to repairtips or service information CT5510K is linked to 163 components (IC's and/or transformers) in the Tectra database, through which you can identify electrical compatibilities (crossreferences) in appliances.


Chassis information is available (which chassis is built in into CT5510K ).

EURAS system also knows 536 appliances having the same chassis as CT5510K and can easily list them.

For CT5510K there are 5 compatible appliances known and can be listed.


In the repair discussion pinboard for CT5510K there are 90 replies to questions asked about 76 different repair problems.
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Last updated: 18. Aug 2008 11:58:34 MET, doccode ISO9002AS168EKA200805C [cachelite] EURASMOP

Responsible for the content: EURAS International GmbH, Eime, Germany. All rights reserved, EURAS database V2.0 (C) 2002-2008. All brand- or productnames are copyrighted by the respective manufacturer of the appliance and are only being used for identification purposes.