General Forum

Re: BeoVision 3-32 almost dead tube, then wait, it's all better again!?

ipaul — Mon, 26 Oct 2009 06:19:50 GMT

Dave, i'd just keep an eye on it if it comes back or not and just not worry too much about it yet :).

Than if it comes back (and you're confident to work inside a tv !!!!! otherwise have someone to do so) try tapping the tube end to see if this has an influence.

Once established it is a fault in the tube you could try putting the tv on the floor with the screen facing the floor, unplug it, put external supply on the cathode heather (10-12 V or so to make it glow more than normal) and tapping the side(s) of the tube for a while.

Apparently the problem is sometimes caused by dirt in the tube which in this way sometimes falls out.

If this is succesfull the tube shouldn't be 'tap-sensitive' anymore.

Recently i fixed an AV5 tube this way (but nobody knows for how long this will work).

The tube in the RF BV3 and Avant can be replaced of course, it's a LG-Philps tube and because of low demand here in Europe available for not much money but i don't know how to go about that in Oz :).

But again: leave the tapping etc on the tube by someone who knows about woring on tv's otherwise maybe more damage is done (including yourself) !!

Re: BeoVision 3-32 almost dead tube, then wait, it's all better again!?

Jonathan — Sun, 25 Oct 2009 23:26:06 GMT

Maybe the Beolab 1s are too close???

(or too loud? tee hee)

In saying that, I've never had a tube go with all of my Mxs or Avants or 3-32... Sounds like it's something magnetic?

Re: BeoVision 3-32 almost dead tube, then wait, it's all better again!?

Dave — Sun, 25 Oct 2009 21:03:28 GMT

richtoy:

Well I brought a BV3/32 with a defective tube from Lifestyle AV (red flyback lines visible on menu screen) and fixed it using a homemade tube rejuvenator (40watt bulb and the mains )

This first attempt lasted 3 weeks before the internal short re-appeared so I attempted a mechanical fix. This involved my son and I holding the set with its back down towards the floor and gently tapping it against the floor. This worked and the fault has not re-appeared in 3 months (3 hours PS3 per day)

You will find more info here http://www.repairfaq.org/samnew/tvfaq/tvcrtshorts.htm on CRT shorts...

Richard

facsinating! Thanks for the tips guys, and i did not know that tubes were availbale outside of B&O, how would i find one when i need to? Yes i think it de-gaussed itself after a few switch ons, but there was nothing moved at all, nothing different... so it is quite strange, it is at a window and i live on a main road, maybe something was disturbed when a ig truck went past..?

Re: BeoVision 3-32 almost dead tube, then wait, it's all better again!?

richtoy — Sun, 25 Oct 2009 18:55:45 GMT

Well I brought a BV3/32 with a defective tube from Lifestyle AV (red flyback lines visible on menu screen) and fixed it using a homemade tube rejuvenator (40watt bulb and the mains )

This first attempt lasted 3 weeks before the internal short re-appeared so I attempted a mechanical fix. This involved my son and I holding the set with its back down towards the floor and gently tapping it against the floor. This worked and the fault has not re-appeared in 3 months (3 hours PS3 per day)

You will find more info here http://www.repairfaq.org/samnew/tvfaq/tvcrtshorts.htm on CRT shorts...

Richard

Re: BeoVision 3-32 almost dead tube, then wait, it's all better again!?

vikinger — Sun, 25 Oct 2009 17:24:29 GMT

I know this is unlikely, but you didn't have a strong magnetic source or microwave anywhere near the TV on a temporary basis (or in an adjoining room on the other side of a stud wall)? These can cause the symptoms you describe, but the problem usually goes after removing/relocating the magnetic source and then degaussing the TV (which may take several switching on and off cycles).

Graham

Re: BeoVision 3-32 almost dead tube, then wait, it's all better again!?

ipaul — Sun, 25 Oct 2009 16:33:50 GMT

Indeed: sounds like the tube unfortunately.

Not too common as far as i know with RF tubes, but recently i bought a BV3-32 with the same problem.

Don't know if you can do repairs or otherwise have a friend into this, it might be an option to try the 'tapping' way to fix it again (this occasionaly works with the curved ESF tubes in Avant and AV5).

Other option might be getting a new tube, they go for very cheap these days (not from B&O), i put a new tube in mine but i live in NL so don't know if this is an option overthere.

PS: of course, first, if this occurs more/often determine that it is the tube, it might be something else too !!

Re: BeoVision 3-32 almost dead tube, then wait, it's all better again!?

tompa — Sun, 25 Oct 2009 09:49:46 GMT

Hi,

it probebly the tube (CRT) that are defective

/Tompa

Re: BeoVision 3-32 almost dead tube, then wait, it's all better again!?

kallasr — Mon, 19 Oct 2009 07:33:31 GMT

Well, after 3 dead tubes (Avant, BV 3-32, MX7000) I gave up on CRTs....

Ralf

Re: BeoVision 3-32 almost dead tube, then wait, it's all better again!?

Dave — Mon, 19 Oct 2009 06:47:13 GMT

No-one has anything to say about a tube seemingly dying and then returning to normal? No-one?

That's rather odd...

BeoVision 3-32 almost dead tube, then wait, it's all better again!?

Dave — Sun, 18 Oct 2009 07:05:27 GMT

Hi all,

To my dismay about 3 weeks ago i noticed the picture on my BV3 was different, i switched to a source where there was nothing plugged in, and noticed the screen was flickering faintly through the black, and i could see a red glow to the left and right edges of the screen, HORRIFYING. :(

Tonight i was watching tv and i thought 'hey the picture looks better tonight', switched to V.AUX and sure enough the red glow is gone and black is black as black again... what is going on?

I was hoping my BV3 would last longer than 0356 days of being in ~video mode~