 All right we'll check this out. Pretty crazy, huh? So what do you think? We got some kind of magnetism short over here or something? Hey everybody welcome back again today to Retro Tech. I'm Steve and I've got a 14M4U Sony PVM here in the shop and this one's doing something pretty strange. You can see a purplish, darkish hue over here on this side of the screen and then boom sometimes it'll just go away like it just did right there and what that's telling me is there's some kind of short or something that's going on here with messing up the magnetism. It could be the deflection yoke. It could be that there is a installed SDI board on this monitor and maybe that's somehow interfering and shorting something out or grounding something on the shell and causing that hue to show up. So we're going to take a look inside of this monitor and see what's causing this. The first thing we need to do is power it down and take the outer shell off and then I'm going to start by inspecting in there and it'll come back and show you what I find out after that. Now I've removed the shell and what you're looking at is this optional SDI module here that's been installed and it looks like it was properly installed. The thing that I'm concerned is since it seems to be this side that has the issues there's either some kind of extra magnetism where this isn't de-magnetized correctly or possibly it's interfering by grounding something out when you know it's a little bit loose as it hangs here. It's just kind of again an additional option so it's not normally on here and at this point this is a like analog SDI so it's pretty useless at this point. So anyway what I'm going to do now is I'm going to start feeding our signal back in here and I'm going to see if just by me moving this a little bit or grounding it against anything will cause that color image to show. If it does then we may just remove this entirely and hopefully that will get rid of our issue. Now let's test out my little theory here. I would not recommend you doing this if you don't know anything about electronics so you've never worked on CRTs before so please just note that's my disclaimer to you. But let's just see. I do believe it's got to do with this. See as you tap it eventually it'll hit something and cause it to ground out and then same thing as if you tap it it just eventually goes away so I'm thinking that that's just rattling in there and causing that interference. Here's our board that I've removed. Again it's the BKM101C component SDI video kit and that is fully shielded. Now I've also removed some cabling here and this longer cable goes into the power supply so I've removed it it connects power to this board and then this is goes into our main board so it allows for it to communicate with the main board and the video inputs and add it into the main part of the monitor so let's set up. Now let's go ahead and test this out make sure that the monitor still works without that SDI card installed. Alright so without that installed we're not we started it up we didn't get any interference. Let's run a degauss again as I tap the sides I'm not noticing anything so the grounding is probably not coming from the degausing cable and then this is the shielding on the main PVM that I'm tapping against and we'll just see if I can make that actually change and ground anymore and no it's not really happening. I don't really want to slap inside there and make the current ground out but that's what I think was happening is that board was causing something on the inside to short more than likely a connection involving the deflection yoke since we were getting that discoloration. I'm going to let it run for a while and run some more tests on it and hopefully if it shows back up I'll definitely come back and update it otherwise we'll see what happens and how it looks once I've got it fully tested. Well I've completed some pretty thorough testing and I've not been able to recreate that magnetism or short at all since I uninstalled the SDI card and so I'm kind of convinced that that was the problem to begin with and you know logic would tell you that once you remove something you can't get it to come back and that was probably the issue so that's good that's a pretty easy fix here and something maybe to think about if you have this kind of an issue and you do see something like an extra card installed or there's always a good chance to go in and check inside the monitor too to see if for some reason some cable looks to be grounding against the shell or maybe another portion of the board or something that's another reason once you get these pvms at least you want to do is open it up inspect it a little bit that's a really good idea because you don't want to have a lot of trouble inside from shorts or anything like that but now the pvms seems to be working great and what i'm going to go ahead and do is the customer would like to do the full deluxe cap kit similar to the one you saw in my 20m4u demo video we're going to do that cap kit on this monitor and then we'll adjust the yoke a little bit and some of the deflection to make sure it's in its best available condition after that well that's going to do it for the repair portion of the video but as i finish out today i want to show some close-ups of mario and some other things on your screen so you can get an idea for how sharp this 14m4u is i can confirm that with my eyeballs i can tell a difference between the 800 and 600 lines on resolution it's really going to be difficult to show that in comparison video thanks again for watching everybody please let me know what you think with a comment below and if you enjoyed the video hit the like for me and i will see you all next time with some more retro content