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 Post subject: Re: TV RGB mod thread
PostPosted: Wed Aug 14, 2019 12:20 am 



Joined: 31 Dec 2013
Posts: 17
Location: New York
MarkOZLAD wrote:
Sounds like the green circuit has an issue if the OSD was green and is now red.

Have to check everything with a multimeter, in resistance mode. Make sure you have continuity ~0 ohms when you should just have a complete circuit, also check resistance to ground and make sure each of R,G and B read the same.

Take photos where you removed the surface mount resistors. Look for possible issues.


Turns out I was incorrect. My parents have the same CRT in their kitchen and the INPUT is red and the volume OSD are the same colors as well. INPUT still comes in initially as a rectangular blob (blown out) and reduces into the word Input. I still feel like all of the OSD is a little blurry - although I do not remember how blurry it was before I attempted the mod. When I turn it on and initially use the volume controls it appears as a blob, like INPUT. When I had the Wii plugged in through component (green cable only) the menu and warning text seemed to be clearer, making me think just the OSD will have this problem. The wires are running to these points on the board:

Image

Based on my best attempt to trace the pads to the Jungle, I soldered to these locations. If you work your way down the image, the side I solder to is right, right, left. I need to double-check to see which pad was lifting/damaged, and will update this shortly when I do.

If you look at my previous post, you can see the resistors circled (in red, green, and blue) and determine if I am connected to the wrong side, not that I know if this could cause this.

When plugging in the N64, this is the image I was getting:

Image

What you are seeing is the logo from the intro to Goldeneye 007. Initially, nothing would display and I would get a scrambled signal (either black juttery screen or descending bars of scrambled b&w mess), but after playing with my Sync/composite wire in the front input I finally got this. The audio wire does not work at all so I am assuming I have some issues with my SCART input wiring. I also figure all the issues could be occurring here, but I figured I would ask about how my wiring to the pads is.

Thanks again!

Update: Now the TV will not display anything again. Having the N64 running to the SCART input with the composite cable plugged into the front of the unit for Sync causes a series of descending diagonal blocks of lines/scramble.
_________________
maxtherabbit wrote:
Imagine toggle switch OSD modding a TV in 2019


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 Post subject: Re: TV RGB mod thread
PostPosted: Thu Aug 15, 2019 8:19 am 


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Joined: 09 Aug 2017
Posts: 1224
Location: Australia
So the only appropriate course of action now is to sneak into your parents place and switch sets while no ones looking right?


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 Post subject: Re: TV RGB mod thread
PostPosted: Mon Aug 19, 2019 1:53 am 



Joined: 18 Aug 2019
Posts: 1
Hi All

Long time lurker who is ready to take the plunge and try and mod my first set. The 8 bit Guy video makes it look easy but I thought I should check in with people who know what they are doing beofre I warm up the soldering iron.

So I have a Pansonic set, chasis MX-4 which I have the servcie manual for. It shows 3.3KOhm coming from the red line from the microcontroller and 3.9KOhm for the blue and green lines.
Should I add a 620 Ohm resistor to the red line and 750 Ohm resistors for blue and green after the orginal ones? Does it matter that these lines go to ground through 330PF caps before these resistors?

Does it matter what guage wire I use to wire this up? Any advice would be much appreciated.

Image


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 Post subject: Re: TV RGB mod thread
PostPosted: Mon Aug 19, 2019 5:13 am 


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Joined: 27 Jul 2019
Posts: 4
Thanks Bratwurst, for helping me mod my Toshiba 32A33! I made a video.

https://youtu.be/zyZUW1inATk

If anyone has some ideas about making the horizontal position (other than the very helpful information Voultar already posted) please share.


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