hace 5 años
first of all a big greeting to the community of me reparo.com this time a TV of the model already described with chassis PH03 080105 arrived at the work table - the fault already specified, in full review the correction situation occurred of welding, and correction of a short or union of voltages, between emitter and collector of the C2482 that regulates the voltages of KB apparently these two pins looked like to join since the voltage that comes to the emitter of the same was 7 v when it would have that having 2.8 within the corrections could be verified by isolating the KB line that the kinescope is in good condition the regulators are fine only the R 915 suffered overheating to such a degree that the colors of values are almost erased, this still retains its value remaining as a single fault that pin 53 of the jungle that is om 7380-nm1p080716 is delivering a 6v signal when it must actually deliver 2.8
The million dollar question is ---------- HOW CAN THIS SIGNAL BE MANIPULATED OR REDUCED TO THE NEEDED?
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