Re: westinghouse vr3215
510 ohms 5%. When I test it I get 518 ohms cold. I'll let it get hot and check then too.
510 ohms 5%. When I test it I get 518 ohms cold. I'll let it get hot and check then too.
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Re: westinghouse vr3215
When powered on I get 0 ohms. When hot, while cooling, I get resistance starting between 0 and 50 ohms and increasing about 3-5 ohms per second. Freeze spray has no effect other than making resistance increase faster when powered off.------------signature starts here------------
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Re: westinghouse vr3215
That resistor will dissipate a little bit over 1 Watt of power. You cannot check the resistance when circuit is powered up. It is just a bleeder resistor to drain the 24V power supply when the TV is turn off and also gives a little load to the 24V power supply.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
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Re: westinghouse vr3215
So its normal to get hot?------------signature starts here------------
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Re: westinghouse vr3215
1 Watt on small body can be hot. The circuit will function without that resistor in place, you can verify that the resistor is connected in parallel with the filter cap or not by checking the connection between the legs of the cap and the resistor.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
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Re: westinghouse vr3215
I did that, it is parallel. I figured there would be some heat since some of the energy passing through resistance is converted to heat. I just wasn't sure what was normal.
What about the SMD caps C209 and C210 not having any voltage and also not being a negative or ground? I noticed that one side of them is on the same pad as the big tab on 2 of the MOSFETs.------------signature starts here------------
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Re: westinghouse vr3215
At this point I cannot tell much unless we can get the spec sheet of that PWM IC which drives those 4 MOSFETs. The inverter is just not putting out enough high voltage to drive the lamps right now.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
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Re: westinghouse vr3215
I was trying to find the data sheet for that but no luck. I'll keep looking.------------signature starts here------------
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Re: westinghouse vr3215
By the way, did you test those 4 MOSFET.
Looking at it with big tab up
pin1 = left pin (Gate)
Pin2 = biag tab (Drain)
pin 3 = Right tab (Source)
Just measure the resistance of
1 & 2 =
1 & 3 =
2 & 3 =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
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Re: westinghouse vr3215
I had done 1 & 3 on all of them. I'll do them all when I get home from work (about 9:30 eastern time).------------signature starts here------------
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Re: westinghouse vr3215
OK, resistances of the MOSFETs are as follows.
Amp4015p (1) closest to power connector
1 & 2 12.02m
1 & 3 9.99k
2 & 3 9.8m
Amp4010n (1) closest to power connector
1 & 2 9.98m
1 & 3 39k
2 & 3 12.06m
Amp4015p (2)
1 & 2 12.04m
1 & 3 10.01k
2 & 3 9.9m
Amp4010n (2)
1 & 2 11.95m
1 & 3 42.3k
2 & 3 10.10m------------signature starts here------------
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Re: westinghouse vr3215
Well,, they do not have any very low resistance value at all. I really do not know what else for you to test at this point, running out of Idea.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
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Re: westinghouse vr3215
My ESR meter got delivered today. I'll go pick it up tomorrow.------------signature starts here------------
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Re: westinghouse vr3215
Well, I didn't want to have to buy a new inverter board but I have a buyer waiting on me so I didn't have much choice. Got lucky and found one on eBay for $32 with free shipping. I think with a working board for a reference we might be able to figure out the other one. In any event, I've learned more from this TV than all the others combined.------------signature starts here------------
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Re: westinghouse vr3215
I got my ESR meter and tested the cap I replaced. Its got an ESR of 0.10 ohms. The meter is telling me its leaky. Maybe that cap won't work after all. I have some Panasonic FCs coming. The cap I took out had an ESR of 0.06 ohms.
Edit: The small tan cap that is parallel with the big resistor has an ESR of 0.37 ohms. The meter says its leaky. It is marked 104. What size would that be for a replacement?Last edited by lookimback; 09-24-2013, 08:13 AM.------------signature starts here------------
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Re: westinghouse vr3215
Ceramic cap marked 104 will not accurately test on most ESR meters.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: westinghouse vr3215
I have a Peak Atlas ESR70. I couldn't get it to work on the little blue ceramic caps either.------------signature starts here------------
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Re: westinghouse vr3215
There are two SMD DC blocking caps in series with the primary side of the inverter transformer (see the SCH I posted), if they are bad, it will also cause the transformers not be driven correctly.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
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Re: westinghouse vr3215
C209 and C210? I tested them and the meter didn't say they were bad. I'll test them again and post the ESR when I get home tonight.------------signature starts here------------
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Re: westinghouse vr3215
OK, I read the instructions that came with the ESR meter. It wasn't telling me the caps were bad. It was saying in circuit/leaky because it couldn't read the capacitance. So, the DC blocking caps both read 370uf 0.06 ohms. They are parallel so this doesn't really tell me if one is bad.------------signature starts here------------
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Ok, so I know I know, it's a Westinghouse....lol It's got the backlights but no video. Likely the panel, but I'd like to take some measurements on the buffer board with help from you experts to confirm. See the attached pictures. In pic #1, there's a nice pin reference to use to take some measurements. The large IC in pic #7 gets up to 60degC when the TV is on.
So, backlights, no video, go! 🙂...06-03-2024, 03:21 PM -
Westinghouse 32" Smart TV (Model: WD32HBR105) . Originally stuck on logo with no response from remote and no firmware file available to flash via USB. Westinghouse Support stated it would require service but that wasn't a cost effective option. I used dental floss to remove the motherboard processor heatsink to identify what make it was (Mstar). Unfortunately that knowledge didn't help with a solution. After the heatsink removal it only displayed a completely white screen. I then decided to replace the motherboard with a universal 3-in-1 board but the white screen problem continued. This...10-27-2022, 06:32 PM -
Hello all!
Westinghouse TV WD48FAB100 Not Powering On – Burn Mark Found on Power Supply .
I have a Westinghouse LED TV, model WD48FAB100 that is not powering on. Upon removing the back cover, I noticed a burn mark where the AC cord connects to the power supply/main board. In this model, there is only one board combining the two functions. Previous owner said the TV experienced a lightening strike, but who knows. I checked the main fuse, tested OK. Here are a collection of readings from the power supply ports. Looking for some guidance on what to test/check next.... -
Hi All... Me again. Begging for help. The guy who now believes it's possible to fix a TV (one of the millions) one can find on the streets of NYC. I hate hate hate waste...
Thanks to y'all's help I fixed and am happily watching a 70inch Sharp Aquos. Perfect. Learned a lot, replaced LEDs. Pulled screen/panel. Proud.
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There is sound. It turns off and on. Screen is black. I can... -
Hello,
I got this TV (Westinghouse DWM40F1G1) that did not came on one day, blinked for a split second and turned off. I looked at it closer with flashlight and figured that the TV actually works, its just the backlight that does not.
There is one PCB board - all of the components are on it: TP.MS3393.P85
I took my oscilloscope and looked what is coming to the MOSFET that is switching current to LEDs - I could see that the PWM signal comes in but it cuts off almost instantly. I thought its the driver chip OB3350CP and so I replaced it.
After that the...
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