I have tevion TV power supply
-
-
Re: metal oxide varistor how to chack with multimeter
what does it say on it?
got a foto? -
Re: metal oxide varistor how to chack with multimeter
On Tvr 14621Comment
-
Re: metal oxide varistor how to chack with multimeter
PicAttached FilesComment
-
-
Re: metal oxide varistor how to chack with multimeter
The MOV should measure open circuit. If it checks shorted, remove it. The power supply should work without it, but it should be replaced for continued protection.Last edited by R_J; 05-04-2018, 01:10 PM.Comment
-
Re: metal oxide varistor how to chack with multimeter
it's probably good, when they fail they usually explode and cover the area in soot!Comment
-
Re: metal oxide varistor how to chack with multimeter
When I chack mov with multimeter it not beeping it mean short?Comment
-
Re: metal oxide varistor how to chack with multimeter
Only show some number not beepingComment
-
Re: metal oxide varistor how to chack with multimeter
does your meter have a beeper ?Comment
-
Re: metal oxide varistor how to chack with multimeter
PicAttached FilesComment
-
-
Re: metal oxide varistor how to chack with multimeter
Let's get to the point, what is the power supply or the TV not doing?
Are you getting any dc Voltage at the cold side connectors?
BTW, in beeping mode when it beeps it is telling you you have continuity between point A and point B, it does not mean what you are testing is bad or shorted out.
Use Ohm mode if you looking for shorts, but you need to know characteristic of components you are testing first.Last edited by budm; 05-05-2018, 02:53 PM.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
-
Re: metal oxide varistor how to chack with multimeter
If your meter is not beeping, and is showing 1968 with the leads shorted on continuity mode, then the leads or the meter is faulty...
Unplug the leads and short the input sockets together with a piece of wire. You should get a beep and a low number, almost zero...Last edited by Agent24; 05-05-2018, 05:25 PM."Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
-David VanHornComment
-
Re: metal oxide varistor how to chack with multimeter
maybe the battery is low - i'v never had a meter that indicated "low battery" BEFORE it started showing bullshit readings!Comment
-
Metal Oxide Varistors (MOV) Data Sheet
Features
● Wide operating voltage (V1mA) range from 18V to 820V
● Fast responding to transient over-voltage
● Large absorbing transient energy capability
● Low clamping ratio and no follow-on current
● Meets MSL level 1, per J-STD-020
● Safety certification: UL: E327997 CSA: 246579 VDE: 40027827
Applications
● Transistor, diode, IC, thyristor or triac semiconductor protection
● Surge protection in consumer electronics
● Surge protection in industrial...10-07-2024, 05:58 AM -
I mistakely pluged 100v japanese retro game console to 220v outlet.
So It seems that glass fuse and varistor have been blew up.
I can identify that voltage and ampere value of glass fuse(250V LF 1.6A),but It is impossible to identify varistor type in my sega saturn PSU(YAMAHA 35M07U XR258)
Is there any way to identify varistor type in my sega saturn PSU?
Any reply would be appreciated.
EDIT:
It seems that I finally found out what type this black varistor is. It is Panasonic ERZV05D221 “ZNR” Transient/Surge Absorbers (Type D) Varistor Voltage... -
Can I measure a Metal Oxide Power Resistor the normal way?
When I put my fluke on resistance and measure across the legs (I've removed it) I get 22 kOhms. Reading the bands I'm expecting this to be a 330 mOhm +/- 5% resistor.
Am I reading it wrong or is it stuffed?... -
Problem
This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached.... -
Hi all, Im working on a board, that my customer brought to another shop, and smeared liquid metal all over the board.
The laptop powers on, then shuts off. I noticed traces of Liquid Metal near the edge of the CPU, but I fear some maybe underneath.
Has anyone ever tried Ultrasonic cleaning, or compressed air to remove or agitate the liquid metal?07-11-2025, 01:47 PM
Comment