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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Posted on Jan 02, 2017

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What the voltage value of zener diodes? (D825, D826 red,red,gray) and D823 (red,yellow).


This table is the information used by MOST diode manufacturers that use color banding on diodes. Most manufacturers stamp the ID right on the diode but some do use color banding as the method of identification. For purposes of alignment, the side with any color band closest to either side of the diode is the equivalent of the left side of this table. The three examples in the table when associated with the values in the lower table, are identified as 1N64E for the top diode, 1N452G for the middle diode and 1N4762 for the bottom diode.
See the color coding

25789975-o5icj23xic0ud0c1fg3qznri-3-0.jpg http://electronicshelponline.blogspot.com/

Jul 20, 2015 | Panasonic Televison & Video

1 Answer

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.

Jan 27, 2015 | Panasonic Televison & Video

1 Answer

MCS 160 Boston Subwoofer ZD3 Zener Diode Value


ZD3 is a 18v zener. Also check the surface mount resistor on the back of the board that is attached to ZD3, I think it is R9. Should be 10 ohms. This resistor sometimes opens when the diode goes short.

Jul 13, 2013 | Audio Players & Recorders

1 Answer

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 #

Jun 28, 2009 | Panasonic TC-29FJ20 TV

1 Answer

Burnt Zener diode... Voltage spec??


On the cathode of the zener diode look for a filter cap and check its value the voltage of the zener should be less than the working voltage of the zener. Basicly its likely being used as a shunt regulator as protection and regulation of the voltage. When the zener hits a certain threshold it will breakdown and start conducting to ground until the supply regulates and then it will recover. If the filter cap for that voltage rail was 25V I would guess that the zener would probably be regulating between 12 and 20 volts. I'd pick a 15V Zener its probably +- %10 on the original and any system should be able to take a %10 tolerance as a general design rule.

May 07, 2009 | Emerson Televison & Video

1 Answer

Panasonic TC-21S10M2 TV


R2M diode is 130v zener, the missing diode is RM25 which is 55V zener for over voltage protection.

May 05, 2009 | Panasonic Televison & Video

3 Answers

UNKNOWN VALUE OF VOLTAGE ZENER DIODES


I was not able to find any service or schematic for this model. The colors means that the value is 22.6 volts zener diode with the other blue band indicating where the cathode is.
Could you tell me where or what other components this zener diode is connected to?

Jul 02, 2008 | Televison & Video

5 Answers

Tv does not power up


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

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