RCA Colortrack Nov 1999, chassis TX826ZD, SN 946625050, model E13334WH
Sounds like it's clicking itself on and off, picture tube don't light. An inductor , 6603-09D FEC990BB 9023800 112uH seems to be clicking. It came on one time and ran fine for a while then quit again back to clicking. Any ideas?
New finding. When It's playing normally it starts failing by collapsing the picture from the top and bottom to the center with a bright line across the center before it goes off completely and starts clicking.
Hipupchuck wrote in news:- _KdnRKFS4T62czXnZ2dnUVZ snipped-for-privacy@giganews.com:
probably bad electrolytic caps. an ESR meter will find them. the clicking is the power supply current limiting and trying to restart.
Also,look for discolored,bulging or leaking electrolytic caps.
-- Jim Yanik jyanik at kua.net
Also, check for bad joints on field output I.C. Very very common, all makes and models ...
Arfa
ESR meters range from .01 to 99 ohms. Can you use a digital multimeter as an ESR meter?
Hipupchuck wrote in news:BPSdnQP94MpUus_XnZ2dnUVZ snipped-for-privacy@giganews.com:
ESR meters use short pulses to test capacitors for equivalent series resistance.
A DVM would use DC to check for DC resistance.
The answer of your question is NO, a DVM can not be used to test ESR although an ESR meter CAN [in many cases] be used to test for other kinds of resistance, it could not [for example] be used on an inductor, to test the inductor's equivalent series (or DC) resistance because the short pulse could see a high impedence (depending on the value of the inductor) rather than the series resistance.
You CAN use the DVM to test for LEAKAGE (parallel resistance) of the capacitor, whereas the ESR meter is useless for that purpose.
-- bz 73 de N5BZ k please pardon my infinite ignorance, the set-of-things-I-do-not-know is an infinite set.
Nope. Entirely different measurement principle, measuring something which is entirely different from DC ohms. ESR is sort of like 'AC ohms' if you will, and is a measure of the 'goodness' of the behaviour of the cap under AC or pulse conditions. Invest in an ESR meter, and you won't regret it. Bob Parker's design has been revamped into the "Blue", and is marketed by Anatek Corporation. There is a large section on their website, covering all aspects of the meter, and some useful info on the principles of ESR measurement, and what it can tell you about the condition of an electrolytic cap. This meter is available either ready made or as a kit, and is very reasonably priced. I use both a "Blue", and its predecessor, professionally and daily, and I would recommend this design without reservation as an admirable performer and excellent value for money. Some time back, I did a review of the kit for a magazine. If you are interested in reading it, mail me off-group, and I'll forward you a copy.
Arfa
Theres a repair kit available to fix this TV problem, search Google for : TDTX82
I can't seem to find the contents of the kit. I don't like buying something blind. What do you think is in it?
This group is for electronic repair, not for advice on what to do once you have found a solution to the problem. Thats where your judgment and learning experience begin.
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