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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Wed Jul 29, 2009 10:30 pm Post subject: |
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| Nashou66 wrote: | Draganm, if you think about it it doesnt matter if you leave it. the G2 pin will never touch anything in the new hole of P6. And the G2 wire is insulated where you connect it to the pin at P6.
Athanasios |
right, but what about pin 7?
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Wed Jul 29, 2009 10:44 pm Post subject: |
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| draganm wrote: | | Nashou66 wrote: | Draganm, if you think about it it doesnt matter if you leave it. the G2 pin will never touch anything in the new hole of P6. And the G2 wire is insulated where you connect it to the pin at P6.
Athanasios |
right, but what about pin 7? |
Pin 6 and 7 are basically just floating pins, i think they help if there is any arching in the tube, but not sure.
On my one 8500 pin 7 is not even there on the tubes!!
Athanasios
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Zolzar
Joined: 26 Jun 2009
Posts: 252
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| Posted: Sun Aug 02, 2009 3:05 pm Post subject: |
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Easy enough......drill out Pin 6 and hook up G2. If the DVB's are ever a problem and I need to go back to DMBs the VNBs will still work since pins 6 & 7 basically floating. Nice!
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Zolzar
Joined: 26 Jun 2009
Posts: 252
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| Posted: Sat Aug 08, 2009 5:00 pm Post subject: |
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The replacement tubes have arrived. The only question I have is concerning the grounding on the DVB. The DVB's I have are from a Barco and the grounding is slightly different. It has the spring/wire setup around the bell housing. I cut off the old ground lead and soldered the two on from the old DMB Marquee tube to the wire around the bell housing. Is this acceptable or do I need to use copper tape around the housing like the Marquee setup? Thanks.
John
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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Zolzar
Joined: 26 Jun 2009
Posts: 252
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| Posted: Sat Aug 08, 2009 6:18 pm Post subject: |
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Thanks for the the quick reply Athanasios. I thought about and went with a hybrid method. I pulled the spring, attached the tape, reattached the spring, and then soldered it all together. I don't see why a little extra grounding would hurt anything. I'll let you know how it works.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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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: Sat Aug 08, 2009 6:25 pm Post subject: |
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I carefully peel off the copper tape and hold it to the new tube with duct tape. That seems to work well.
Cheers!
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CRT_Ben
Joined: 28 Aug 2006
Posts: 1684
Location: Northern Virginia
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| Posted: Sat Aug 08, 2009 7:25 pm Post subject: |
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| Curt Palme wrote: | I carefully peel off the copper tape and hold it to the new tube with duct tape. That seems to work well.
Cheers! |
I did this as well with all of my Thomas tubes because they had no ground straps when I got them. It works like a champ.
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Zolzar
Joined: 26 Jun 2009
Posts: 252
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| Posted: Sat Aug 08, 2009 11:44 pm Post subject: |
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Ok. The everything seemed to go ok. No problems with the grounding. Thanks for the tips guys....appreciated!!! The blue tube booted up with no problems. I then replaced the red.
Then the moment of truth........POWER ON!!!! Nothing!!!!! No HV!!!!! I checked everything and I cant' figure out what the hell happened. My HV has simply disappeared!!! I pulled the supply and then put it back it. I pulled the supply and opened it up to check the fuse and that's ok. No error lights either! It appears I'm running out of luck. I just can't believe this is happening. Any suggestions of where to look next?
John
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Zolzar
Joined: 26 Jun 2009
Posts: 252
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| Posted: Sun Aug 09, 2009 1:49 am Post subject: |
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Ok....did some research and and swapped in a red test tube and the PJ fired right up. The HV is supply is fine. Something with the new tube is causing an HV failure.
Sorry I jumped the gun there guys without doing a little research and testing for myself. Back to testing.
John
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Zolzar
Joined: 26 Jun 2009
Posts: 252
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| Posted: Sun Aug 09, 2009 1:59 am Post subject: |
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Whew! Back in business. Looks like it had something to do with the red VNB. Now for the fun stuff. Setup!!!
John
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Zolzar
Joined: 26 Jun 2009
Posts: 252
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| Posted: Sun Aug 09, 2009 4:42 am Post subject: |
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I aligned the deflection yokes and neutralized the astig magnets. I turned off the machine to start putting it back together and once again no HV upon restart. I reseated the VNB multiple times and swapped the red VNB with the blue twice to no avail. Would an iffy HV lead cause a HV dropout? I still think it's something with the way the VNB is sitting on the pins. Something just doesn't seem right. If I can't get the red DMV to work I'm going to drop the old DNB red back in. It's a 7.5 on the tube condition chart so it's really not that bad. I simply figured why not drop a 9 in if I have the opportunity.
John
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Zolzar
Joined: 26 Jun 2009
Posts: 252
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| Posted: Sun Aug 09, 2009 10:33 pm Post subject: |
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Old red back in and the PJ is up and running.
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