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comm
Joined: 09 Mar 2006
Posts: 46
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| Posted: Tue Mar 25, 2008 3:00 am Post subject: |
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I would pull the upper motherboard at the least. I almost decided not to pull it on my 9500 because it looked like such a PIA, but I found a small pool between the motherboard and the white plastic sheet. That stuff just seems to find its way into everything!
The dishwasher worked for me!  I tried to get get the glycol off with alcohol but could never get it all off. Of course my leak was much much worse than yours. I just used a few drops of dawn, but I think just the hot water was enough.
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Heywood Jablome
Joined: 12 Mar 2006
Posts: 1548
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| Posted: Tue Mar 25, 2008 11:06 am Post subject: |
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| Nashou66 wrote: | The thing is it was working before the re initialization and if it was a glycol related problem i think the problem would have showed up earlier. And like tim said the key voltages seem ok. you should have swaped the green tube to ......say the reds location and tried it there. then you would know for sure if it was the tube. Hopefully I am wrong and its not the tube.
Athanasios |
Well.... the timing was quite coincidental BUT even if the glycol concern is "barking up the wrong tree" I'm still glad I found it: I don't want the kind of trouble that glycol CAN cause so I may as well fix this while the projector is on the bench.
Upper motherboard went thru the dishwasher last night (china light setting  no heat dry no heat rinse) and I've got a gallon of "Boat Stove Fuel" (denatured alcohol for pressurized fuel stoves common on boats.)
I'll use the alcohol as Curt suggests rather than taking down the whole chassis.
I'll also use alcohol on the active boards rather than the dishwasher... I don't want to have to pull all the PLCC chips etc on the VIM, quad decoder, etc to chase water around.
_________________
"Those countries which lag behind in industry, in the application of mechanics and technical chemistry, in the careful selection and utilization of natural products, where the respect for such activities does not permeate all classes of society, will unfailingly decline in prosperity. They will sink faster when neighbor states, with an energetic exchange between science and industry, go forward with renewed vitality."
-- Baron Alexander von Humboldt: 1769-1859
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Tue Mar 25, 2008 5:16 pm Post subject: |
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[quote="Heywood Jablome"] | Nashou66 wrote: | | Upper motherboard went thru the dishwasher last night (china light setting no heat dry no heat rinse)...... |
If the motherboard was not heat-dried or immediately hosed in alcohol, I would fear corrosion in the connectors.
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Heywood Jablome
Joined: 12 Mar 2006
Posts: 1548
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| Posted: Tue Mar 25, 2008 5:37 pm Post subject: |
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I've got access to some serious de-oxit type cleaners, but will be following up with alcohol soon anyway.
_________________
"Those countries which lag behind in industry, in the application of mechanics and technical chemistry, in the careful selection and utilization of natural products, where the respect for such activities does not permeate all classes of society, will unfailingly decline in prosperity. They will sink faster when neighbor states, with an energetic exchange between science and industry, go forward with renewed vitality."
-- Baron Alexander von Humboldt: 1769-1859
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Wed Mar 26, 2008 3:15 am Post subject: |
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Hope i have better luck with the second retro 9500LC YEPP! Bruce wasn't able to get to it so I offered to help out. We talked about it and I decided to pay him for it and go get it, off at 5 am tomorrow. 298 miles driving down with a buddy then i'm renting a uhaul , he'll drive that and I'll follow in the car. We had a truck lined up but it fell through tonight, So I and Bruce were calling each other like crazy, I decided to just pay him and take it for now. Bruce seems like a cool dude. And I promissed if it decide to sell it for more I'll throw a few bucks his way for being cool in letting it go.
Athanasios
I think i really am addicted !
_________________
Don't blame your underwear for your crooked ass~ unknown Greek philosopher
"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
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Heywood Jablome
Joined: 12 Mar 2006
Posts: 1548
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| Posted: Sun Mar 30, 2008 8:47 pm Post subject: |
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Well... I've got all the boards cleaned with alcohol and a toothbrush... the chassis is drying out now, as are the boards.
I re-seated every DIP and PLCC package chip I could lay my hands on, too (yes, I have the tools) and am waiting for them to dry.
LOTS of alcohol was used in a spray bottle: I pre-wetted a portion of the board, scrubbed with a toothbrush (carefully so as to not disturb the non-SMT re-work parts) and then rinsed. Repeated on both sides and all connectors just for laughs.
I'm probably going to invest in some CAIG for the re-assembly, but not at fifteen bucks an ounce (RatShack price...)
While I've got the beast rendered into little pieces, is there anything I should consider checking or re-working?
_________________
"Those countries which lag behind in industry, in the application of mechanics and technical chemistry, in the careful selection and utilization of natural products, where the respect for such activities does not permeate all classes of society, will unfailingly decline in prosperity. They will sink faster when neighbor states, with an energetic exchange between science and industry, go forward with renewed vitality."
-- Baron Alexander von Humboldt: 1769-1859
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Sun Mar 30, 2008 9:53 pm Post subject: |
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Make sure the belly fans are clean and the wires are tied up out of the way so if you ceiling mount it they wont hang down and get into the fans. Also it could be a good time t maybe do some noise reduction in the belly fan are. if you have any acoustical foam you could line the interior of the belly fan housing with it to absorb some noise I also used dynamat sound deadener. You can see how i used the foam to decouple the fans from the housing, I also have it lined on the inside of the housing. Also I added some on top of the dynamat(not in this picture) to some areas making sure i didnt restrict any airflow.
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_________________
Don't blame your underwear for your crooked ass~ unknown Greek philosopher
"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
One Smart Dog!!!
Marquee High Performance Bellows now shipping!!
Marquee Modifications and Performance Enhancement
Marquee C-element and Bellow removal
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Heywood Jablome
Joined: 12 Mar 2006
Posts: 1548
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| Posted: Sun Mar 30, 2008 11:44 pm Post subject: |
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| Nashou66 wrote: | | Make sure the belly fans are clean and the wires are tied up out of the way so if you ceiling mount it they wont hang down and get into the fans. Also it could be a good time t maybe do some noise reduction in the belly fan are. if you have any acoustical foam you could line the interior of the belly fan housing with it to absorb some noise I also used dynamat sound deadener. You can see how i used the foam to decouple the fans from the housing, I also have it lined on the inside of the housing. Also I added some on top of the dynamat(not in this picture) to some areas making sure i didnt restrict any airflow. |
Good thaughts.... I've got access to a nearly unlimited supply of "stuff" that while not Dynamat brand name will certainly suffice.
I'll pull the belly fans and look at their airflow tomorrow.
_________________
"Those countries which lag behind in industry, in the application of mechanics and technical chemistry, in the careful selection and utilization of natural products, where the respect for such activities does not permeate all classes of society, will unfailingly decline in prosperity. They will sink faster when neighbor states, with an energetic exchange between science and industry, go forward with renewed vitality."
-- Baron Alexander von Humboldt: 1769-1859
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Sun Mar 30, 2008 11:49 pm Post subject: |
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Yo J, please resist the urge to do any mods until after she's up, running and stable again.
_________________
Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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Heywood Jablome
Joined: 12 Mar 2006
Posts: 1548
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| Posted: Sun Mar 30, 2008 11:52 pm Post subject: |
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Yeah... I know. I know... avoid changing multiple variables.
I just loathe downtime... Baseball season is starting! (And Boating Season, and Get some goddamn grass season)
_________________
"Those countries which lag behind in industry, in the application of mechanics and technical chemistry, in the careful selection and utilization of natural products, where the respect for such activities does not permeate all classes of society, will unfailingly decline in prosperity. They will sink faster when neighbor states, with an energetic exchange between science and industry, go forward with renewed vitality."
-- Baron Alexander von Humboldt: 1769-1859
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Mon Mar 31, 2008 12:24 am Post subject: |
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| Heywood Jablome wrote: | Yeah... I know. I know... avoid changing multiple variables.
I just loathe downtime... Baseball season is starting! (And Boating Season, and Get some goddamn grass season) |
Going to be practicing that golf putt on the front yard soon 
_________________
Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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Heywood Jablome
Joined: 12 Mar 2006
Posts: 1548
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| Posted: Sat Apr 05, 2008 9:38 pm Post subject: |
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With any luck I'll HAVE a front lawn this year.
Well, its' back together and now it seems I've managed to lose HV. No error lights, everything lights up, no HV crackle and the G2 line (measured ag R76 as Tim noted above) is showing me under 5 VDC. I need to re-confirm this measurement, but I'm fairly sure I had R76.
Question: Will the HV splitter having one tube unplugged cause the HV to shutdown without indicators? I've got the red tube out still and there's nothing in that hole on the splitter.
_________________
"Those countries which lag behind in industry, in the application of mechanics and technical chemistry, in the careful selection and utilization of natural products, where the respect for such activities does not permeate all classes of society, will unfailingly decline in prosperity. They will sink faster when neighbor states, with an energetic exchange between science and industry, go forward with renewed vitality."
-- Baron Alexander von Humboldt: 1769-1859
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Heywood Jablome
Joined: 12 Mar 2006
Posts: 1548
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| Posted: Sat Apr 05, 2008 10:01 pm Post subject: |
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Another odd thing I've noticed... there's a transistor bent down and not enjoying the benefit of the heatsink... Q502 on the convergence board. It looks as though it was bent down intentionally, as it was well clear of the spring clip.
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"Those countries which lag behind in industry, in the application of mechanics and technical chemistry, in the careful selection and utilization of natural products, where the respect for such activities does not permeate all classes of society, will unfailingly decline in prosperity. They will sink faster when neighbor states, with an energetic exchange between science and industry, go forward with renewed vitality."
-- Baron Alexander von Humboldt: 1769-1859
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Sat Apr 05, 2008 10:36 pm Post subject: |
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| Heywood Jablome wrote: | With any luck I'll HAVE a front lawn this year.
Well, its' back together and now it seems I've managed to lose HV. No error lights, everything lights up, no HV crackle and the G2 line (measured ag R76 as Tim noted above) is showing me under 5 VDC. I need to re-confirm this measurement, but I'm fairly sure I had R76.
Question: Will the HV splitter having one tube unplugged cause the HV to shutdown without indicators? I've got the red tube out still and there's nothing in that hole on the splitter. |
Hello
You need all the scan yokes connected or the high voltage will not turn on. I hope you did not blow that folded transistor.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Sat Apr 05, 2008 10:37 pm Post subject: |
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That shouldnt be bent down, even intentionally . it must have been bent down during a repair. i'd pull the clip off and put it back. but i dont think that would cause your problem i'd have to look att he schematics to see what thats for.
Ok I looked it up and that is in the blue vertical convergance section. so once you get it all back and running and you have a problem with convergance on the blue tube you know where to look first.
Athanasios
_________________
Don't blame your underwear for your crooked ass~ unknown Greek philosopher
"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
One Smart Dog!!!
Marquee High Performance Bellows now shipping!!
Marquee Modifications and Performance Enhancement
Marquee C-element and Bellow removal
Last edited by Nashou66 on Sat Apr 05, 2008 10:43 pm; edited 1 time in total
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tse
Joined: 03 May 2006
Posts: 1014
Location: Sweatbucket, Fl.
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| Posted: Sat Apr 05, 2008 10:41 pm Post subject: |
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The HV will still come up with any or all of the tubes not connected to the splitter. All of the transistors under the spring clips should be up against the heat sink.
Scott
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"Were we directed from Washington when to sow and when to reap, we would soon want bread."
Thomas Jefferson
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Sat Apr 05, 2008 10:53 pm Post subject: |
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J, why is the red tube out? Is that the one that is leaking. If so, come over and grab the red I have on the shelf and pop it in. All you need to do is swap over your magnetics and your good to go.
_________________
Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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Heywood Jablome
Joined: 12 Mar 2006
Posts: 1548
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| Posted: Sun Apr 06, 2008 1:54 am Post subject: |
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| stefuel wrote: | | J, why is the red tube out? Is that the one that is leaking. If so, come over and grab the red I have on the shelf and pop it in. All you need to do is swap over your magnetics and your good to go. |
I think Tim hit on the root cause of the HV problem.. Red is definately unplugged.
Red is, also, the highest volume "weeper" so I'll probably take you up on your offer. Hasta manana!
_________________
"Those countries which lag behind in industry, in the application of mechanics and technical chemistry, in the careful selection and utilization of natural products, where the respect for such activities does not permeate all classes of society, will unfailingly decline in prosperity. They will sink faster when neighbor states, with an energetic exchange between science and industry, go forward with renewed vitality."
-- Baron Alexander von Humboldt: 1769-1859
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Sun Apr 06, 2008 2:53 am Post subject: |
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| Heywood Jablome wrote: | | stefuel wrote: | | J, why is the red tube out? Is that the one that is leaking. If so, come over and grab the red I have on the shelf and pop it in. All you need to do is swap over your magnetics and your good to go. |
I think Tim hit on the root cause of the HV problem.. Red is definately unplugged.
Red is, also, the highest volume "weeper" so I'll probably take you up on your offer. Hasta manana! |
I'll drop it off tomorrow AM after Bobby's swimming lesson if you want.
_________________
Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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Heywood Jablome
Joined: 12 Mar 2006
Posts: 1548
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| Posted: Sun Apr 06, 2008 11:56 am Post subject: |
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All the tubes are held only with their pivot pins so I can swap around.
HV is back... it was the scan reversal yoke plugs. Green is still dim.
One more test and I'm going to reverse the R&G tubes but it definitely looks like I'll be in the market for a green.
_________________
"Those countries which lag behind in industry, in the application of mechanics and technical chemistry, in the careful selection and utilization of natural products, where the respect for such activities does not permeate all classes of society, will unfailingly decline in prosperity. They will sink faster when neighbor states, with an energetic exchange between science and industry, go forward with renewed vitality."
-- Baron Alexander von Humboldt: 1769-1859
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