Question about Samsung HCM4216W 42" Rear Projection Television

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Settings on a multimeter

What settings do i use to test the fuses on my ic board to see if they are working and what kind of readings should I be looking for. Iv had new IC put in but my green is still blurry. Red, Blue I can manually move left right up and down just it will not match the green because its blurry or out of focus. Please help.

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A fuse is just a piece of wire so it has very low resistance. To test it with a multimeter select Ohms and the lowest range. The resistance will be nearly 0 if it's good and very high or infinity if it's bad.

If the set is working at all it's probably not the fuses, though.

Posted on Dec 09, 2007

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Posted on Jan 02, 2017

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OLEVIA 242FHDT11 KEEPS BLOWING FUSE EVERY TIME I REPLACE ONE


Fuse keeps from blowing is an indication of short circuit on its line. This is to avoid fire, and further damaged to other parts. Most of the shorts came from the rectifier diode, main filter electrolytic capacitor and the voltage regulator IC/transistor. You should test these parts using the multimeter to isolate the faulty parts. You must pull-out these parts from the board to have an accurate reading and avoid mislead by the reading of other parts connected in parallel.

If you can't troubleshoot the unit yourself, you may replaced the entire power supply board. Click this LINK.


Mjsazon

Oct 17, 2011 | Televison & Video

1 Answer

Dryer runs but does not heat.


Hi.

Check the thermal fuse. The fuse can be tested reading impedance.You can replace the fuse straight away, or you can first test it using a multimeter set on Ohms. If the multimeter reads Ohms infinity when you touch the fuse contacts with the probes, then the fuse is gone. A good fuse will read zero or low impedance.

If the fuse is OK, then you can have a defective thermostat.
In the same way you test the thermostats, thermistors or cutoff located in the heating group, near to fan and element. If they are OK, then they will be conductive at room temperature and will read zero Ohms. If they are bad they read open (infinity). You need to disconnect the part's contact to test properly.

The rest depends if the dryer is electric or gas.


On electric dryers you test the heating element. The heating element is tested in the same way. Set multimeter on impedance, disconnect element, and touch contacts with multimeter probes. If it reads open, then element is gone. A good element reading depends on the specific model. Most washer-dryers, including Whirlpool and Maytag read between 10 and 20 Ohms.


With gas appliances you need to test the ignitor, then coils and then the flame sensor. The ignitor is the most common cause for the problem. Heating coils problems are also common. The flame sensor does not fail very often.

Regards.

Ginko

Sep 06, 2011 | GE Dryers

2 Answers

All of a sudden, there is no light on the button. I have check the electric outlet, it is OK. I pushed every button, but it doesn't work. Is there a fuse on my washer? Or anyother problem?


There should be a dedicated circuit breaker in your main panel.
Check that first.

Then verify power at the outlet with a multimeter.

If there is power at the outlet - unfortunately, there is internal damage to the main board (typically from a power surge) and further testing is required.

Thanks!

Jul 27, 2010 | Frigidaire ATF6000ES Front Load Washer

1 Answer

Freezer coils frosted and refrigerator is not cold. I had this problem about 5 years ago, and it was the defrost control board (something like that). Do you know the correct part name.


The part you are referring to is the adaptive defrost assembly.

You can purchase it online here.

For a diagram depicting the part click here. Its # 13 on the top right.

Warninig: Remove the refrigerator from the mains outlet to prevent shock and use safety gloves before performing any repairs.

Before replacing the board check the defrost heater and thermostat for continuity with a multimeter to ensure they are working properly.

To test defrost thermostat set the multimeter to the ohms setting X1. Place aprobe on each terminal. The multimeter should display a reading ofzero when the thermostat is cold and a reading of infinity when it iswarm (40 to 90 degrees F depending on the model). If the thermostatdoes not pass this test it should be replaced.

To test the defrost heater set the multimeter to the ohms setting X1. Place a probe on each terminal. The multimeter should display a reading somewhere between zero and infinity. If the reading is not between those two extremes the heating element should be replaced.

Dec 01, 2009 | Jenn-Air JCD2389G Side by Side...

1 Answer

IHAVE A HOVER SIX TC650 WHICH WILL NOT HEAT UP ALTHOUGH THE DRUM IS WORKING FINE AND SPINNING.HAVE CHECKED THE FILTERS AND THEY ARE FINE.WHAT CAN BE WRONG


Hi.

Test and eventually replace the Dryer thermal fuse
The fuse is located on the blower wheel cover.
The fuse can be tested using a multimeter.
If the fuse has continuity , then is good.

Test the heating element and the thermostat Thermal cut-off .

Both are tested using a multimeter to read impedance. Set multimeter at Rx1, on Ohms.

To test the element disconnect element and point tester probes at element contact.
If there is no continuity, and the circuit is open, then the element is faulty.

The thermostat can be tested jumping its wires to bypass it, but there are many safety concerns doing this kind of test.
Better disconnecting the thermostat and reading Ohms, as for the element.
At room temp the thermostat must have low impedance, if it goes to infinity, and circuit is open at room temperature, then the thermostat is bad.

If both test good, and you have no heating at all, then it may be a bad electronic control, or a wiring problem.

All test and repair must be done by a technician.

If you need to contact a technician you can call the number listed on the owners manual.


Nov 14, 2009 | Hoover Dryers

1 Answer

No heat but have strong air..


Test and eventually replace the Dryer thermal fuse
The fuse is located on the blower wheel cover.
The fuse can be tested using a multimeter.
If the fuse has continuity , then is good.

Test the heating element and the thermostat Thermal cut-off .

Both are tested using a multimeter to read impedance. Set multimeter at Rx1, on Ohms.

To test the element disconnect element and point tester probes at element contact.
If there is no continuity, and the circuit is open, then the element is faulty.

The thermostat can be tested jumping its wires to bypass it, but there are many safety concerns doing this kind of test.
Better disconnecting the thermostat and reading Ohms, as for the element.
At room temp the thermostat must have low impedance, if it goes to infinity, and circuit is open at room temperature, then the thermostat is bad.

If both test good, and you have no heating at all, then it may be a bad electronic control, or a wiring problem.

All test and repair must be done by a technician.

If you need to contact a technician you can call the number listed on the owners manual.

Nov 13, 2009 | Kenmore Dryers

1 Answer

Kenmore washing machine 6 series model 110. stopped spining. I have pushed in the lid switch and I hear noise like it wants to work but it doesn't.


Test the Lid switch for continuity using a multimeter. Set the multimeter to the ohms setting X1. Place a probe on each terminal. The multimeter should display a reading of infinity. Depress the button on the lid switch and the reading should change from a reading of infinity to roughly zero. If it does not pass both of these tests, the switch should be replaced.

Some lid switches also have a fuse, you can visually inspect the fuse or test it for continuity with a multimeter. If the fuse is bad, replace it with one of the same rating.

Jul 23, 2009 | Kenmore 24032\24036 Top Load Washer

1 Answer

Mitsubishi tv


The ic IC9C25 is a 1 amp 9 volt regulator, see
IC REGULATOR 9V 1A TO252-3 TR - BA09FP-E2

The multimeter must read an output voltage between 8.45, and 9.45 , if it reads 1.7 then the IC is faulty.

Check the datasheet here

Sep 15, 2008 | Mitsubishi WS-65513 65" Rear Projection...

1 Answer

Your sony KP-51WS500


Re-solder any bad solder joints on the D board (this board has the convergence IC's on it.) Replace the IC's with either STK392-560, or a better part which is STK392-570 (this part has been said to hold up better over the years).

Use only original SANYO convergence IC's and not the knockoffs made in China. The latter chips will ensure that you will be back inside the set within a month or two! So do yourself a favor, if you see these IC's on the Internet, and they are very cheap...beware. Usually these IC's cost $16 to $20 a piece, NOT less, like the knockoff IC's. There are several fuses around the convergence IC's (board labels PS8001-8006) and one near a transformer labeled PS8007. All of the convergence circuit fuses are 3.1 amps, 125 volts, and are made by Littelfuse (the 316 series) These are hard to find though, but are required for continued protection, i.e. DO NOT replace with a different value.

These fuses look like little resistors, except they are yellow in color, and have "3150" stamped on them. Test these with a DMM (digital multimeter) set to continuity check. If you find any of these fuses bad, please replace ALL 7 of them. Many factors can stress the fuses over the years, although uncommon, they have been known to open themselves for no apparent reason, UNLESS they have been blown by a bad convergence IC. Also, check any resistors around the convergence IC's for any failed ones. Replace them. You may want to obtain a service manual for this TV, as well.

Jul 13, 2008 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Samsung Rear Projection HD tv IC convergence green only messed up now. Help please


To check the pico fuses you're merely testing for continuity. If you get an infinate reading you're in good shape - if it doesn't budge the meter the fuse is open... That's a really easy set to work on for convergence problems - the convergence board is easily removed..
Another cause for mis-alignment like that are the youke return resistors... There are several out front of the convergence amps that may have changed in value. They are 3.9 ohm - 2w resistors and will look identical to Rz123 and Rz124 (same banding). For those simply select a low ohm setting on the meter and check to see if any of them have some way low or way high reading...
Need anything else just ask...
Bill

Dec 09, 2007 | Samsung HCM4216W 42" Rear Projection...

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