- Old plasma screen Y_SUS anomalies - 3 Updates
- Lightning Strike - 1 Update
| legg <legg@nospam.magma.ca>: Oct 08 10:33PM -0400 On Wed, 06 Oct 2021 14:32:04 -0400, legg <legg@nospam.magma.ca> wrote: <snip> >Still don't know why the buffer test point doesnt follow SUS_OUT. >I'm working with a dark screen - a few pin-pricks of colour >visible in a dark room. Replacing the buffer board stopped the pumping up of -VY. A replacement control card got rid of the double/interrupted set-up waveform, though this double set-up seems to be valid for some dual-scan units. Waveform out of Y_SUS now bog-standard, but buffer test pointstill not following Y_SUS negative. This produced an illuminated panel with vertical red/white/yellow bands playing wack-a-mole left-right and center - at random - for a few minutes, until a resistor in an RCD network located towards the top of the buffer board popped - leaving a horizontal dark green band across the top of the screen; the rest dark. Replacing the resistor and cap(presumed culprit) allowed for a repeat performance; same picture sequencing; same 47R 1W smd resistor popped in same location. . . . so its not just a defective RCD snubber. RL |
| "ohg...@gmail.com" <ohger1s@gmail.com>: Oct 09 08:11AM -0700 On Friday, October 8, 2021 at 10:31:38 PM UTC-4, legg wrote: > resistor popped in same location. > . . . so its not just a defective RCD snubber. > RL Get a bright light and go over the entire display slowly looking for a single burned pixel. If you find one, the display is junk. Not common on LG but not unheard of either. |
| legg <legg@nospam.magma.ca>: Oct 09 12:19PM -0400 On Sat, 9 Oct 2021 08:11:36 -0700 (PDT), "ohg...@gmail.com" >> . . . so its not just a defective RCD snubber. >> RL >Get a bright light and go over the entire display slowly looking for a single burned pixel. If you find one, the display is junk. Not common on LG but not unheard of either. That would do it? - cause this repeated component failure? Couldn't the connections to that single pixel be disconnected, producing a black t on the screen, and non-popping parts? RL |
| Michael Trew <michael.trew@att.net>: Oct 08 06:39PM -0400 On 10/5/2021 1:03 PM, Jeff Liebermann wrote: > my latest AT&T POTS bill was $41.25 for flat rate, no long distance. I > originate or receive perhaps 50 fairly short, non-telemarketting, > phone calls per month making my cost about $0.80 per valid call. After all taxes/fees, that's about what my unlimited local flat rate line costs. I pay about $5 per month, give/take to a third party LD service (TCI LD), for approximately 60 minutes of LD per month. 5 cents/min domestic plus tax. I probably make/receive more calls than that. I hardly, if ever, use my cell. It's 10 cents per minute (but nothing more), with a minimum of $10/year, so I make a point of not using it. |
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