Ron.M
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Jan 27, 2011, 2:02 AM
Post #19 of 25
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Re: [philnotfil] RCA Model:R52WM24 Chassis:ITC222, fixed convergence, now dead
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philnotfil;... I can use the troubleshooting flowchart in that field service guide to identify any remaining problems. Fine with me..Go for it.... So a capacitor increasing in resistance is taking a charge, but a capacitor not increasing in resistance may or may not be taking a charge? Now I'm confused. CP135, right next to the problem child is the same (220mfd, 35v) and shows the expected increase in resistance. What would allow CP130 to not show this increase in resistance and still be functional? Should I go straight to the troubleshooting flowchart, or wait until I replace this capacitor? If it really is bad I might as well fix it first, if the lack of increasing resistance doesn't mean it is bad then I may as well start the troubleshooting process. I think :) Let's clear this up once & for all....... You are NOT reading resistance...PERIOD !!!! You are watching a cap absorb microamps of electrons that are reading thru your meter.... When your meter is set to ohms , the meter puts out a low voltage across the probes... When a RESISTOR is connected across the probes , a mini current flows thru the resistor... The meter's circuit detects the voltage drop across that resistor & converts that to a reading that you get.... Depending on the amount of the drop will change the reading accordingly.,.... IF the drop is varying as it does when you hook up a cap , so does the reading.... You are seeing the cap take a CHARGE & when it reaches it's limit , the reading stops.... IF you read ohms at that point , chances are that the cap IS bad.... Is this settled now ???? Now I'm confused. CP135, right next to the problem child is the same (220mfd, 35v) and shows the expected increase in resistance. What would allow CP130 to not show this increase in resistance and still be functional? Let me make this CLEAR....CP130 IS bad.... It is a fairly large cap (220 mfd) & should swing your meter thru the ohms range.... The best way to check lytic caps is with a ESR meter & a cap checker... Both too costly for you to invest in at this time.... Hmm, I find the "safety circuit is active" error to be a more plausible interpretation of error code 33 than the BV500. It does seem to be the safety circuit shutting down the TV. You are free to believe what you so choose...BUT , I STRONGLY disagree..... You listed 5 different error codes.... MINE ARE:=>.... 1)=#36...My manual says;..."Tube gets not warm in time"... 2)=#33...My manual says;..."BV500 not connected".. 3)=#84...NOT in my manual (Its for direct view).... 4)=#37...My manual says;..."V_Guard does not available"... 5)=#34...My manual says;..."PH12_REF not available"..... YOURS ARE;=>... 36 (58)- Tube Is Still Not Warm After Warmup Time << We agree !!! 33 (163)- Safety Circuit Is Active << Different result... 84 (15)- Tube Type Is RP, But Convergence Was Not Detected 37 (5)- Vertical Problem << Same as mine... 34 (3)- Horizontal Flyback Problem << Not sure what mine is....BUT , could cause yours to shut-down... Items 2,3,4 & 5 in my list are ALL reasonable causes... ANY of the above can cause shut-down.... That IS why I asked you to CLEAR the old error codes out.... We need to start fresh... EDIT:... I should have used a bigger smiley when I was ribbing him :) They're right at the left side of your reply box...Just click on the one you want to use....... Have fun & GOOD LUCK........ Later....Ron.M........ Veteran & Retired TV technician
(This post was edited by Ron.M on Jan 27, 2011, 2:05 AM)
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