CurtPalme.com Home Theater Forum

reg152 · Joined: 14 Jan 2008 Posts: 4

Today a buddy and I were cleaning the lens' on his 1292. We took the Red lens off however incorrectly took out all 8 screws around the lens body. After cleaning the lens and attempting to re-mount it all of the glycol in the liquid coupling ran out. We realized that we took out 4 screws too many and effectively opened the seal on the front of the L.C. We carefully drained all of the fluid out and removed the red tube from the projector. Now my question is...

1. Can this be repaired?

2. If so, where do I get the correct Glycol?

3. How do you put the Glycol back in the coupling?

4. Do any pieces need to be "peeled" away and re-sealed?

Attached are some pics of what I now have. Any help would be greatly appreciated.

Thanks,

Ryan

Zebu Fellenz · Joined: 21 Dec 2006 Posts: 2567

Welcome,

Did you clean ALL of the spilled glycol out of the set? If not that should be your first priority as glycol is highly corrosive and will ruin any boards that it comes in contact with.

Sorry, I don't know how to refill the tube.

Erik

reg152 · Joined: 14 Jan 2008 Posts: 4

Erik,

Since the projector was hanging on the ceiling at the time no glycol ran into the chassis. We checked the chassis to make sure but it all ran out the bottom of the tube....right onto the couch below. Sad

Ryan

ecrabb · Posted: Mon Jan 14, 2008 2:30 am Post subject:

I don't know how many posts I've read over the years about somebody's new (to them) 1292 with glycol spilled into the set because they backed all eight screws out. I suppose Sony never anticipated at-home DIY'ers taking apart a $30,000 CRT projector, but I'm still surprised they didn't label, color-code, cap, or better yet use a different kind of screw to prevent this from happening so often. Regardless, bummer.

Still, as long as no glycol got on any boards, it's all recoverable.

http://www.wehaveparts.com/index.cgi?subbcat=Coolant
http://www.mcminone.com/product.asp?product_id=20-4275&catalog_name=MCMProducts
http://www.tristatemodule.com/html/ptv_coolant.html
http://www.matelectronics.com

I've never seen a 1292 LC chamber apart, so I can't comment on reassembly. Somebody here will have retubed one and know how it goes back together. Don't freak out - you can get it running again just fine.

SC

r.bauer · Joined: 08 Apr 2006 Posts: 280 Location: The Netherlands

Consider the couch as waste and throw it away, at least don't sit on it anymore. Glycol is toxic and burnes the human skin.

Refilling the tube?
Clean all of the old glycol out with destilled water and let the chamber dry. Make sure no glucol has leaked on to the yokes.

Get approx 0,7 liter of Glycol (from Curt) and put the tube upright with the front facing upward (on an workbench) and refill the chamber and reseat the C-element. If there still is an airbubble in the chamber, remove the C-element and add more glycol. Don't overfill the chamber and clean up spilled glycol immediately.

Remember to touch the C-element only with 100% pure cotton cleaning cloth, cleaning paper will destroy (scratch) the element as the plastic is very soft.

Clean all the glycol from the projector's metalparts with a lot of cleaning paper. You should be able to get the projector up and running just fine.

Indeed, you are not the first who has made this mistake. Just be happy that the projector was ceiling mount.

reg152 · Joined: 14 Jan 2008 Posts: 4

Ok, we got the tube LC chamber refilled with Glycol and put the tube back into the projector. Everything has been re-wired correctly however upon turning on the projector everything is fine for the first 10 - 15 seconds until the image is white, but then the red tube continues to get brighter and brighter until it shuts off and cycles through the same thing again. After leaving the projector on for awhile and cycling through this problem it finally shuts down and leaves "04" error code ("IK-Over"). Does anyone have any ideas on what may be wrong and how it can be corrected? Any help would be greatly appreciated.

Thx,

Ryan

draganm · Joined: 08 Mar 2006 Posts: 8990 Location: Colorado

reg152 · Joined: 14 Jan 2008 Posts: 4

OK, we completely striped down the tube and throughly cleaned all of the components. We replaced everything and placed the gun back in the projector and turned it on. WaLa.....the projector powered on and stayed on without an IK-Over error on the Red tube. Now there is another problem....the red gun surges in brightness. Any idea what could be causing this problem.

Thx,

Ryan

draganm · Joined: 08 Mar 2006 Posts: 8990 Location: Colorado

sounds like a problem in the Gaain circuit. I don't know where that voltage originates from in a 1292, but it is always delivered throguh the neck-card on a CRT. Did you guys slide the neck-card off and clean all the pin-out sockets on the back of the tube?