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nunu
Joined: 12 Apr 2009
Posts: 26
Location: FL
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 Posted: Fri Nov 06, 2009 5:09 pm Post subject: Mitsubishi VS-50605 wavy lines. Help? |
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I took a picture of the problem, you can see the wavy lines, it does not seem to affect the menu
any help is appreciated 
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JTS1957
Joined: 21 Jan 2009
Posts: 2395
Location: Far, Far Away
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| Posted: Fri Nov 06, 2009 5:46 pm Post subject: |
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I presume you are using RF input/Tuner. How about other A/V inputs 
PIP ? |
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Jesse Mack
Joined: 22 May 2008
Posts: 600
Location: The Last Frontier
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| Posted: Fri Nov 06, 2009 6:41 pm Post subject: |
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The symptom of your picture you sent is called "piecrusting" from the old days and used to be very common. Not so much now.
Check C2C52, 10 UFD @ 50 V, off of the base of Q2C51 on the signal pcb. Also check C2P05, 100 UFD 16 V, off pin 3 of IC2P01 (9-Volt Regulator) on the signal pcb assy.
Hope this helps
Jesse |
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JTS1957
Joined: 21 Jan 2009
Posts: 2395
Location: Far, Far Away
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| Posted: Fri Nov 06, 2009 6:58 pm Post subject: |
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True "piecrusting" would be much more regular in appearance. Similar to the corrugations in metal roofing.
Jesse's right in that it WILL be due to a bad electrolytic capacitor - bad filtering, in either signal or a power source. |
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nunu
Joined: 12 Apr 2009
Posts: 26
Location: FL
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| Posted: Fri Nov 06, 2009 7:42 pm Post subject: |
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JTS1957, I only have cable TV coming from wall so I hooked up a DVD player to A/Vs and had the same picture distortion problem then I tried the component hook up on the TV and I got a ““perfect pictureâ€â€ looks like am going to take the back cover off the TV tomorrow unless there’s something else I could try tonight?
Maybe temporarily hooking up a VCR from my closet to the component to use the TV turner on it until I check on what Jesse Mack suggested or the solution is found
Guys, Thank you for your help |
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nunu
Joined: 12 Apr 2009
Posts: 26
Location: FL
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| Posted: Sat Nov 07, 2009 10:26 am Post subject: |
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Hooking up a VCR to the component input on the back of the TV
to use as the TV turner cannot be done; I don’t think they make a splitter for that? |
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nunu
Joined: 12 Apr 2009
Posts: 26
Location: FL
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| Posted: Sat Nov 07, 2009 11:22 pm Post subject: |
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By the looks of it someone had their hands on the Signal board, for what I can tell so far they replaced C2P02, C2P03, C2P04, C2P05 and IC2PO1. I guess they could not solder C2P04 from the top so they did from the bottom I also noticed a lot of dark Flux in around fifteen to twenty places and most of them the solder is shiny, am assuming that it is led free.
Still looking for C2C52 by Q2C51, I guess it's on the other board?. |
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nunu
Joined: 12 Apr 2009
Posts: 26
Location: FL
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| Posted: Sat Nov 07, 2009 11:33 pm Post subject: |
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Solder job done on C2P04::
 [/img] |
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nunu
Joined: 12 Apr 2009
Posts: 26
Location: FL
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| Posted: Sun Nov 08, 2009 9:01 pm Post subject: |
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I’m having trouble finding C2C52, 10 UFD @ 50 V, off of the base of Q2C51. Any suggestions 
Thanks |
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nunu
Joined: 12 Apr 2009
Posts: 26
Location: FL
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| Posted: Tue Nov 10, 2009 10:33 am Post subject: |
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I was told C2C52, 10 UFD @ 50 V and Q2C51 are under that shield on the picture above close to the bottom… “Let the testing begin† |
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