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Need zener diode part number for NB500MG1F in power supply D1012...

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Posted on May 06, 2010

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Equilent for a zener diode (RD 30ESB2)


Zener diodes are invariably used as low power voltage regulators or as a voltage reference for voltage regulating circuitry.

Zener diodes are sold by wattage and reference voltage by numerous component suppliers and constructor stores and in theory the voltage is marked on them, though difficult to see and easily defaced.

Finding an equivalent for what appears to be a manufacturer's part number presents a rather difficult challenge. The official service sheet will probably provide the required voltage. Without that information you will either have to purchase the component from the manufacturer under the part number or experiment until the required value is discovered.

Mar 02, 2016 | Televison & Video

1 Answer

Pls help me find exact value of the 2 zener diodes in power supply of tc21f3p


It is very difficult to give you the exact voltage of the zener diodes you're discussing here; as there is no other details about the position or part number of them at the circuit board. If you wish to get some details; visit the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Schematic diagrams to SMPS power supplies to many popular brand TVs and other devices are given. Refer it please. Hope; it will help you to check it out.

Jul 06, 2015 | Televison & Video

1 Answer

Sony TV has a power supply problem both ics irf1b7n50a in the power supply section are all shorting which number could I use as an equivalent. is there a way I could use a power modular with two power id's


Hi Saidi
Have you checked all the other components used in the main power supply regulator section circuit, before replacing a new STR? You should do it. There should be a reason for the failure to STR. You should find it, and rectify it, before replacing an other STR. Check all the small components, resistors, zener diodes, small value ceramic capacitors etc: Make sure all of it are OK. Especially give a keen attention to zener diodes used; if any. It will be best to replace these diodes, even if you do not find any fault with it with multimeter test.For more information go to http://electronicshelponline.blogspot.com/
Power supply schematics to some popular brand TVs are given. Pull up older posts. Good Luck.

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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

What is the zener volt


I'm not sure what your question is. A zener diode is a voltage regulator of sorts. The zener voltage is the avalanche voltage...the voltage that the zener diode will maintain when it's connected in series with an impedance, usually a resistor, IF the voltage across the zener diode and the impedance, in series, is greater than the avalanche voltage (zener voltage), and the polarity of the voltage across the zener diode is thus: positive cathode, negative anode (i.e., reverse bias). The excess voltage (the margin) appears across the impedance. Zeners are often used as voltage reference diodes in regulated power supplies. Does this answer your question?

Apr 16, 2013 | Computers & Internet

1 Answer

LG 32lh200 power supply failure common problem


You might try to follow the diode back to the source and read voltage to know the value of the diode and also look on the diode for generic number--short of that Google the model number with "parts" as it might be cheaper to replace the board than try to fix it by guessing values.

Aug 27, 2012 | LG 32LH200C-A1 LCDTV 32LH200C 32inch Wide...

1 Answer

My hitachi 29in ctv power supply 110vac had a problem on zener diode will blown if we switch on the tv. what spare parts to change so that the power supply zener diode will not blown again and the supply...


The secondary output voltage comes out from is more than it should be there. That is why, the protection zener diode blows off, as soon as you switch ON the set. First find and repair the power supply regulator, for correct output voltage. Refer its repair book for details. After repair include the zener diode in place. OK.

May 08, 2012 | Hitachi Televison & Video

1 Answer

Polaroid 860-AZ0-GF371H Power Supply Unit. After replaceing all bad caps and and shorted fets Q102,103 I still need to know the value of smd zener ZK2 in Parallel with 3 low value smd resistors. I think...


HZK Series

Silicon Epitaxial Planar Zener Diodes for

Stabilized Power Supply

open the following link and it help you it has all the detail about the mentioned diode

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2 Answers

AKAI LCT2715 will not turn on gives blinking


This series of TVs has a famous issue with the power board (part number MLT166A or similar). Several capacitors and zener diodes burn out causing some resistors to burn as well. If you are capable of doing component level repairs check capacitors on the board and zeners Z2, Z3, Z4, Z5 and resistors around them. If you prefer to spend hundred bucks and simply buy the working power board for it - ebay is your answer.

Sep 06, 2009 | Akai LCT2715 27 in. LCD Television

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