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pjmasks
Joined: 11 Jan 2018
Posts: 30
Location: Staffordshire U.K.
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| Posted: Thu Jan 18, 2018 7:35 pm Post subject: |
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Green tube goes off suddenly, I'm going to check the glow.
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pjmasks
Joined: 11 Jan 2018
Posts: 30
Location: Staffordshire U.K.
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| Posted: Thu Jan 18, 2018 8:58 pm Post subject: |
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Orange glow at the very back of the neck keeps glowing when the green colour goes off screen. Same for all three tubes.
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Thu Jan 18, 2018 11:33 pm Post subject: |
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OK, so it's not filament related. Most likely video signal related.
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pjmasks
Joined: 11 Jan 2018
Posts: 30
Location: Staffordshire U.K.
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| Posted: Fri Jan 19, 2018 5:58 pm Post subject: |
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Noticed one dull joint on the back of the green neck board, directly behind one of the connectors so will try soldering it and see what happens 
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pjmasks
Joined: 11 Jan 2018
Posts: 30
Location: Staffordshire U.K.
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| Posted: Sat Jan 20, 2018 2:04 pm Post subject: |
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Good news, I think its fixed! I have had it running for nearly two hours without the green tube turning off. thumbsup: 
I've attached a picture, I went back to the terminal blocks, the one circled was not flush on the pcb. I tried hard to force it back onto the board so it was flush like the others. Thats the only thing I've done and so far its holding up, I will hold off any soldering for now.
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kal
Forum Administrator
Joined: 06 Mar 2006
Posts: 18114
Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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| Posted: Sat Jan 20, 2018 3:37 pm Post subject: |
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| pjmasks wrote: | | I went back to the terminal blocks, the one circled was not flush on the pcb. |
That doesn't matter. What matters if there's a bad connection / cold solder joint. As long as the pins are well soldered, that plastic terminal block positioning doesn't matter.
| pjmasks wrote: | | I tried hard to force it back onto the board so it was flush like the others. |
I wouldn't do that. Forcing could break the solder joint. It doesn't need to be flush. In fact, if you were able to force it (move it), you've most likely broken the solder joint and you really should be reflowing solder to ensure good connectivity. Right now it's only connecting due to friction.
Kal
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My basement/HT/bar/brewery build 2.0
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pjmasks
Joined: 11 Jan 2018
Posts: 30
Location: Staffordshire U.K.
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| Posted: Mon Jan 22, 2018 11:51 pm Post subject: |
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Oops, beginners mistake, I am not an expert and have googled pcb and how they are attached and you are absolutely correct. I must admit it is working perfectly now and honestly its the only thing have tinkered with. I am not not sure if it will keep going but its been good on a test for 6 hours plus no problems. You mentioned the reflowing solder, I take it that means soldering the pins where I pushed the block, I will do that. Hopefully it will be ok now... many thanks you for your tips and support.
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kal
Forum Administrator
Joined: 06 Mar 2006
Posts: 18114
Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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