General monitor question

[Texas_Funnyhair]

Man, that video was great! Thank you!

I will preface this post with it's probably gonna come off as just a dumb idea, but just seeing what the complications or near impossibilities of it are.

I know that the tube is in vacuum, and that the glass is sprayed with phosphorus in different ways. As I understand it from all the great analogies here, the phosphorus that's sprayed on is getting worn out in those spots, causing the burn in.

So having said that, is there a way (I'm thinking like how a surgeon does microscopic heart surgery, etc.) to puncture the glass from the neck side, respray the tube, then redo the vacuum?

Again, there's probably some there's no way to 'xyz' but I wanted to understand why that is.

I don't think that was ever really possible with a color tube since they have a shadow mask but it could potentially have been done with a B&W tube. Real issue with though would just be getting the equipment to actually do it.

@mopar5150 posted a video of a color tube rebuild, though not sure if they redid the phosphors or just the guns in that video.

 

[mopar5150]

So having said that, is there a way (I'm thinking like how a surgeon does microscopic heart surgery, etc.) to puncture the glass from the neck side, respray the tube, then redo the vacuum?

Here is a video group of a CRT being rebuilt. Not something you can do cheaply. CRT rebuild

 

[TheYeti]

CRT rebuild lab or meth lab? Hard to tell the difference.

 

[summersquall22]

Guys I just want to find chassis that need some work and recap them and figure out what needs to be fixed as I will ask you guys. I successfully took my go7 chassis off. Followed all instructions not to get shocked. In a couple days I get it back and have to put it back on. I need to learn about chassis and the electrical part of not all of this hobby but for what I only want to do

 

[Shavenyak]

I'm just putting bob Roberts box together so I could test a chassis if I am successful in rebuilding it

You have a link for this? I've wanted to build a testing rig for years and haven't been comfortable doing it.

 

[TheYeti]

You have a link for this? I've wanted to build a testing rig for years and haven't been comfortable doing it.

 

[summersquall22]

Incredible video

 

[KazooBR]

Guys I just want to find chassis that need some work and recap them and figure out what needs to be fixed as I will ask you guys. I successfully took my go7 chassis off. Followed all instructions not to get shocked. In a couple days I get it back and have to put it back on. I need to learn about chassis and the electrical part of not all of this hobby but for what I only want to do

You do need to be careful with the high voltages in monitors. But if you want to learn, search the site here for all the info you need. You won't get too far just asking open ended questions without having done the research - I think folks could get annoyed and just ignore your questions.

You will find EVERYTHING you need to know already answered here. But it might be confusing so that's when you should ask.

Good luck.

 

[VectorCollector]

I only work on monitors when I need to. Not fun. Anyone can do a capkit on a 1 layer PCB.
And not the safest activity to be doing in the hobby. More to learn doing PCB repairs. More fun doing the cabinet restoration. IMHO

 

[TheYeti]

I only work on monitors when I need to. Not fun. Anyone can do a capkit on a 1 layer PCB.
And not the safest activity to be doing in the hobby. More to learn doing PCB repairs. More fun doing the cabinet restoration. IMHO

I'm like the opposite. I feel like monitors are the only thing I have a remote chance of fixing myself. (Sometimes...maybe) But significant PCB repair for me is out of the question. I'll clean edge connectors and chip legs but that's about it! LOL

Still waiting to read an obituary where someone died by monitor though.

 

[summersquall22]

I only work on monitors when I need to. Not fun. Anyone can do a capkit on a 1 layer PCB.
And not the safest activity to be doing in the hobby. More to learn doing PCB repairs. More fun doing the cabinet restoration. IMHO

i cant do a cap kit yet. and that is what i want to learn. im passionate about it. i would like to collect chassis. some people collect trains or baseball cards. i want to learn to solder, take readings, and just clean and re do a chassis and plug her into the tpg and have a good picture. good colors. am i crazy? can i learn this?

 

[summersquall22]

i cant do a cap kit yet. and that is what i want to learn. im passionate about it. i would like to collect chassis. some people collect trains or baseball cards. i want to learn to solder, take readings, and just clean and re do a chassis and plug her into the tpg and have a good picture. good colors. am i crazy? can i learn this?

im not going to borher you guys. just when i need to

 

[mopar5150]

I'm like the opposite. I feel like monitors are the only thing I have a remote chance of fixing myself. (Sometimes...maybe) Significant PCB repair for me is out of the question. I'll clean edge connectors and chip legs but that's about it! LOL

I agree. I have had much greater success diagnosing and repairing monitors than PCBs.

Still waiting to read an obituary where someone died by monitor though.

This should not be taken lightly, especially when talking to beginners! Most fear the high voltage section of the monitor but the power supply section has much higher current capability and can easily kill.

Most injuries happen as a secondary event to the electric shock when you yank a hand or arm back.

 

[ArcadeTechGW]

Screwing around with monitors when you don't know what you are doing is a good way to die.

I disagree.

Screwing around with monitors when you don't know what you are doing is a good way to burn things up or spend a ton of money.

Unless you do something really stupid with a monitor (like stand in a grounded puddle of water while grabbing an anode) you can't kill yourself. It's high voltage, but not high current.

I know plenty of people who have been zapped.

Now if you want to see how easy it is to die, get on a 4kV to 12kV or up source to ground. You will pretty much die, or get parts blown off or amputated due to gangrene. I was in the electric utility industry, and worked with 4kV, 6.9kV, 138kV and 345kV. They drilled that into us with videos.

 

[TheYeti]

I honestly don't know how anyone makes it 30 days in this hobby without understanding basic monitor safety. It's like the #1 issue I run into every single game I've purchased. Something is wrong with the monitor and it requires me to fix it.

And even if you literally refuse to repair a single chassis yourself from day 1, then that's fine...you are still going to have to understand how to remove/install that chassis that someone repaired and sold to you.

You can run... but you can't hide from monitors in this hobby, one way or another.

 

[summersquall22]

19" Monitor Chassis Wells Gardner D9500 Arcade Game Pcb/Chassis | eBay

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that is what i want to do. clean up, recap, work on chassis and have an end product like this. by the way this is an NOS 19" wells gardner. she is nice.

 

[summersquall22]

I honestly don't know how anyone makes it 30 days in this hobby without understanding basic monitor safety. It's like the #1 issue I run into every single game I've purchased. Something is wrong with the monitor and it requires me to fix it.

And even if you literally refuse to repair a single chassis yourself from day 1, then that's fine...you are still going to have to understand how to remove/install that chassis that someone repaired and sold to you.

You can run... but you can't hide from monitors in this hobby, one way or another.

great post yeti. seriously it is like having a hobby of collecting beat up trains and fixing them, putting on new parts and getting them back on the tracks. then putting them away

 

[mopar5150]

Unless you do something really stupid with a monitor (like stand in a grounded puddle of water while grabbing an anode) you can't kill yourself. It's high voltage, but not high current.

Again I state that the anode is the least of your worries and to stop down playing the risks of a novice playing with monitors. The power supply section and especially the initial rectified DC and filter caps are high current capable and will kill you. Misunderstanding isolation needs can also spoil your afternoon.

 

[Texas_Funnyhair]

Guys I just want to find chassis that need some work and recap them and figure out what needs to be fixed as I will ask you guys. I successfully took my go7 chassis off. Followed all instructions not to get shocked. In a couple days I get it back and have to put it back on. I need to learn about chassis and the electrical part of not all of this hobby but for what I only want to do

I know you want to learn, but you asked if you could ground your monitor by screwing the ground wire into wood. I really think you should focus on gaining a better understanding of electronics in general before diving into monitors. Maybe practice soldering with kits for a bit. Or if you really wanna work on a CRT, try recapping a small B&W portable set. Like the ones from the 70's, not those 5" ones they sold in the early 2000's, they're usually easy to find for cheap still.

 

[TheYeti]

Screwing around with monitors when you don't know what you are doing is a good way to burn things up or spend a ton of money.

I'm not afraid to admit that I totally agree with this.

No matter how many times I work on a monitor, I'm 100% more worried about doing more damage to the monitor than myself.