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CRT

31 videos.

Even unplugged, a tube television or monitor can hold a dangerous high voltage in the tube and flyback. If the glass is knocked or cracked it may implode, so protect your eyes and never lift the tube by its neck. Mains voltage is inside the set as well. None of these jobs suits a beginner.

A set with no picture, a single bright line, weak colour or no power often has tired capacitors or a fault in the flyback circuit, and the tube itself gets looked at later. If the set is dead, the KV1215 no power, no high voltage diagnosis is the matching symptom. Colour problems are the subject of the Trinitron tube test and rejuvenation, which uses a tube analyser. The Commodore SX-64 has a screen and keyboard in one case, so part two of its restoration covers both, with part one linked from it.

  1. Hobbyist or repairer

    Sony Trinitron CRT KV G14B1 RGB Mod

    Arcade Laboratory

    Sony Trinitron KV-G14B1 gets an RGB input modification, with the maker working from schematics and showing how to adjust the RGB and sync voltages so the set is not overdriven.

  2. Hobbyist or repairer

    How To Service A CRT Monitor

    Noel's Retro Lab

    Noel's Retro Lab fixes a monochrome Amstrad CRT monitor and sets out working practices for a kind of set the maker describes as dangerous.

  3. Hobbyist or repairer

    Fixing An IBM 5154 EGA Monitor For #DOScember

    Retro Hack Shack

    A non-working IBM 5154 EGA monitor is bought to see if it can be saved from the recyclers, and the maker tests capacitors, replaces transistors and chases a grounding fault.

  4. Hobbyist or repairer

    Adjusting CRT Convergence

    Retro Tech

    Colour fringing on a Sony PVM 1353MD is dealt with by positioning the deflection yoke and turning the adjustment rings on the tube neck.

  5. Hobbyist or repairer

    What's Wrong With This Dead Vectrex?

    Retro Tech Repair

    What is wrong with a totally dead Vectrex bought as junk on eBay? The maker diagnoses the fault, after warning that the CRT can hold a deadly charge even when switched off.

  6. Hobbyist or repairer

    Modding a TV for RGB - Part 2

    The 8-Bit Guy

    Part two of an RGB input mod for a consumer CRT television continues the work on the set, with a forum thread linked under the video for the mod itself.

  7. Hobbyist or repairer

    IBM PCjr Repair and Restoration

    The 8-Bit Guy

    The 8-Bit Guy restores an IBM PCjr to its original condition and also repairs a monitor that was damaged while being shipped, with a guest channel linked.

  8. Hobbyist or repairer

    Commodore PET Repair and Restore

    The 8-Bit Guy

    A Commodore PET from the late 1970s gets its keyboard repaired, its screen brightened and its case cleaned by The 8-Bit Guy, who goes through each job in turn.

  9. Hobbyist or repairer

    Tuning up a Dell M992 CRT monitor

    Adrian's Digital Basement

    A free 19 inch Dell M992 CRT monitor, built by Samsung in 2002, arrives filthy and beaten up, and Adrian's Digital Basement sets about tuning it up.