Re: Westinghouse L2046nv
Ok here ya go.
Getting nothing on any of the four resistors in question.
I still am not exactly sure which pins are which because it is oriented differently from the schematic.
What would be considered a "good" reading between Vcc and Ground?
Thanks...
Shredasaurus
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Last Activity: 01-20-2012, 03:43 PM
Joined: 01-13-2012
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Re: Westinghouse L2046nv
Thanks Selldoor!
I can't read them because they appear to be slightly burned on the top. According to the parts list that Selldoor just posted
R131-R134 should be Res SMD 1/4w , 200Mohm, F 1206
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I followed the pin out of U104 in the schematic on page 10 of the same file. The only setting I get a reading on for Vcc and Ground is 200Mohm. I believe I am on the right pins according to the diagram but my Meter behaves odd. It starts around...Last edited by Shredasaurus; 01-15-2012, 08:52 PM.Leave a comment:
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Re: Westinghouse L2046nv
Ok we have R136, R137 and R138 they all have 3903 printed on the top of them. I google searched Resistor 3903 and 390K ohm resistors kept showing up. I don't know if this is the correct value though? I tested each one with my Multimeter set to 20M ohm. They all give a reading of .39 which I believe is correct if they are in fact 390K ohm Resistors?
U104 does look like it has some black on the metal in the center but I don't see any cracks or bubbling. There doesn't appear to be any markings on it to...Leave a comment:
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Re: Westinghouse L2046nv
I swapped all of the caps except for the large cap with Rubycon caps.
I am attaching the best photo I could get of the underside. I am slightly embarrassed because I do my best to be careful and I should know better but I accidentally grounded my test probe when I was initially testing for 110v coming in on the trace.
The spot is pretty obvious in the photo. Not having a replacement fuse immediately on hand, I soldered in a jumper. I know this is not really a good practice or in most cases...
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Re: Westinghouse L2046nv
Desoldered Q102....with my meter set to 200ohms I am reading 7.5ohms between 1 and 2. 5.6ohms between 1 and 3 and 2.1 ohms between pins 2 and 3.
This is what appears to be printed on the component.
p6nk60zfp
gk24w v6
chn 71.8
Thanks!Leave a comment:
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Re: Westinghouse L2046nv
Slapping my forehead lol, didn't have my meter set to diode test. Ok so I got OL one way and .485 the other way. So this Diode is good right?Leave a comment:
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Re: Westinghouse L2046nv
So with no power on the circuit and my meter set to ohms that resistor should read .4 or .7? I am getting 0L no matter which way I orient my test leads.
I am going to Desolder Q102 in a bit to re-test....Leave a comment:
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Re: Westinghouse L2046nv
I am seeing 0 volts DC at CE107.Leave a comment:
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Re: Westinghouse L2046nv
OK I have my multimeter set on 2k Ohms. When I put my 2 leads on the 2 pins of d107 it reads OL. When I test the 3 pins of Q102 it gives me 0 resistance and continuity between all three (1 and 2, 1 and 3, 2 and 3) etc..I will test the voltage on that cap in a bit.Leave a comment:
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Re: Westinghouse L2046nv
JetAdm123 I replaced the rest of the caps before i saw your reply. So i now have all brand new caps.
The components you mentioned....D107 and Q102 they should be on the underside of the board? Having trouble locating them but I probably need to find a magnifying glass.
The voltage on CE107....AC or DC?
Thanks again for the helpLeave a comment:
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Re: Westinghouse L2046nv
Apologies, It was a long day yesterday and I got confused when typing my initial reply. Re-Testing the two pins from the large capacitor I am reading 169 Vdc. Testing the bridge rectifier I get 57.7 vdc between pins 1 and 2...0 volts Dc between pins 2 and 3 , 59vDc between pins 3 and 4 and 169 volts DC between pins 1 and 4.
I still intend to replace the rest of the Caps today but is there anything else I should check?
Oh and yes I realize that this is hi-voltage but it never hurts to have a little safety reminder
Thanks again!Leave a comment:
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Re: Westinghouse L2046nv
-So after reading the standard answer....a bad capacitor can result in keeping the monitor from powering up at all and not be visibly messed up if it is out of tolerance? I apologize, I am still trying to wrap my head around the capacitors role in the circuit.
-RetiredCaps thank you for the quick response. I measured 128 V DC across the filter cap so this would rule out the Rectifier correct?
-I am a little confused by the Pin out legend on the main power board. It has 7 labels on the left side of the connector ......Ground,...Leave a comment:
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Westinghouse L2046nv
Hello everyone, this is my first post. I have 2 Westinghouse L2046NV monitors that I purchased a couple of years ago. The first display went out on me about a year and a half ago. I got online and found some fantastic info on this forum from many other people who were having the same exact problem. I replaced all the suggested caps as well as the blown mini fuse (parts list included in the thread, talk about awesome lol) and I was back in business.
So anyhow....i play in a band and we have a practice room setup with a bit of gear. My Bassist fires up his amplifier the other day and it...
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