Question about Panasonic TC-29FJ20 TV

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Shorted zener diodes in primary, needs exact values!!

Panasonic tc-21fj30p, zener doide is color coded, i cant get the exact values..

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  • Anonymous Mar 21, 2014

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There should be a circuit designation printed on the board. Can you poat that here please? I should be able to get the part number from that. It will be CRxx or Dxx.

Thankis,
Dan

Posted on Jan 28, 2009

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In panasonic modeltc-29sf3 pls give me the working voltage of zener diode with color code gray red red and red yellow in power supplyn section


just read the model and then google it, beside, if you short them, you need to replace them with same value, and this will be determined by the circuit, if you did not change the circuit - just buy two new diodes and install them, do not bother with voltages as they have some tolerance and type will determine it.

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UndefinedI've checked a Panasonic crt color tv model TC-21fj20p, and I find a hard way to discover the cause of the problem until now.. The set has a good primary voltage supply. No problem with the IC...


Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
Any short circuit at the horizontal output section circuit will shut down all the secondary SMPS voltages, as there is short circuit protection circuit to all Sony TVs.

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Hello

W11NB80 is an N-channel 800V-0.65ohm - 11A - rated Metal Oxide Semiconductor Field Effect Transistor [MOSFET]. You can use the folowing substitutions for it
[ 11NM-80, 12NK-80 & 10NC-802]. All of these are its equalent substitutions.
Before replacing the mosfet, check the entire power supply secion for any short circuit, or zener diodes faults. If any of the zener diodes are fused, it will run out the MOSET you sumstitue again. Check it keenly. Unsolder one end of each component, lifit it up a liile from the circuit board and check. Especially zener diodes must not show any leak in 100Kohms range. It is best to replace them all I suggests.
I don't know about its availability in Keniya, yet you try to get it from any electronic spare part shops. f feels any difficulty in getting the same contact [E-Bay] site, they will reach you the exact component at your doorstep. Ok.

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Exact value of zener diodes D826,D827 panasonic tc-21gf30


its stamp on the side in tiny print
standerd values are 3.3 volt 5.1 12.0 ...

if it broke and is unreadable
you need to know the part location on
the board D or Z then #

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you can purchase it from--
http://www.google.com/products?hl=en&client=opera&rls=en&hs=lVo&q=purchase++diode&um=1&ie=UTF-8&ei=tMrHSf61BIGMkAWf0unNDA&sa=X&oi=product_result_group&resnum=4&ct=title

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I have seen the schematic, d982 is a 13v 1/2w zener
-GR

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