Gas discharge bulbs look like small neon lamps (e.g., NE2) but could be filled with some other gas mixture to provide a controlled higher breakdown voltage.
The other is blurred at the corners- not from convergence problems, but just plain out of focus.
Input sync detectors and auto polarity switching circuits as needed for separate horizontal and vertical sync inputs.Usually there will be some degradation in the corners.These will need to be replaced.Depending on the power rating of the equipment, these wattages may need to be increased.Very often, you will find that what you are complaining about is well within this specification.The 'big red' high voltage capacitor is Apple P/N 910-0058, it is mounted to the bottom of the chassis on this display.Excessive voltage on HOT collector - check LV regulator (and line voltage if this is a field repair if any.Else, there could be safety issues (e.g., fire hazard or equipment damage from too large a current rating) or you could be chasing a non-existent problem (e.g., if the new fuse is not slo-blow and is blown by the degauss circuit inrush current but nothing.However, if you really want to do live testing with the main board removed, here are some considerations.
If the damage is minor - only a few wires are involved, it may be possible to separate them from each other and the rest of the winding, thoroughly clean the area, and then insulate the wires with high temperature varnish.
Flybacks fail in several ways: Overheating leading to cracks in the plastic and external arcing.
Work natively with a broad range of formats including ProRes, RED, xavc, avchd,.264, hevc from dslrs, and more.
The whine may be due to worn or dry bearings.
Some possible locations are listed below: Heater to cathode (H-K).
Not so with PCs.Once the effective capacitance drops low enough, 120 Hz (or 100 Hz in countries with 50 Hz power) ripple will make its way into the regulated DC supply (assuming full wave rectification).Horizontal oscillator which locks to horizontal sync pulses.When the vertical scan rate is set close to the local power line frequency, effects resulting from power line interference or bad filter capacitors code promo albelli will produce 1 or 2 wiggles or bars, and these will remain almost stationary on the screen.The most likely possibilities are in the deflection output stage or bad connections to the yoke.You may find that the main switch mode transistor has decided to turn into a blob of solder - dead short.If so the cutoff need adjusting and it will cause the symptoms you describe exactly, If it doesn't come on after a "rest" then yes it may be a bad cap but I have realigned a lot more than I have replaced HV caps!This is what would be affected by moving from one location to another or even rotating the TV on its base without degaussing.Assuming nothing tests faulty so far, clip a voltmeter set on its 500 V or higher scale across the horizontal output transistor and turn the power.In both these cases, if this just started after some work was done to the monitor, the brightness limiter and/or video drive may simply be set so high that the monitor cannot supply enough current to the high voltage.A pair of bars would indicate interference at twice the power line frequency.