Sound but no picture on BeoVision Avant 28 with VCR

17 replies

I have just been given this in exchange for my Sony.

It was working perfectly on Friday but since we moved it yesterday to our house, we now have no picture - but sound is coming from the TV but not the VCR.

It is a 81/03 50htz mark 4.

I'm in a real mess now cos I can't give it back not working and now have no TV!

If anyone could throw any light as to what might have caused the picture to fail and if its worth repairing.

Many thanks

Ollie Bollie 

🤔💡Hi Ollie = Presume u have checked all your cons ok

1  Have u a raster on the screen (snow)?  If yes - u may have an antennae problem

2  If not, can u feel static off the glass on the back of hand at swith-on? If not - you may have a PSU or Line Output Stage problem

It seems a bit strange considering this has happened after your move! Check all your cons. Good luck = Brian (Northumberland)

Hi Blong, thanks for coming back so quickly.

No there is no raster on the screen just completely black

Will check re static - 

Am really hoping that it is not we need a new tube as other half is already in a mood about it and feeling really bad that it's not even our TV!

I can't believe that something as good as B&O could be affected by such a short trip in the car.

Hopeful

Ollie Bollie!

💡Hi again Ollie = I'm fairly sure u have a set-up problem. Have u got a User Manual to hand - if not u can get it in the Products section and follow the links.  I had a quick look there just now and it's possible that if u started from scratch again and followed the guide carefully, you may just get it fixed ok!  I can't imagine that a short car journey has damaged it- u never know, but give it a try - i'm fairly sure that's yr problem. Good luck = Brian (Northumberland)

Thanks Blong.

Have just had the engineer round who suspects it to be a faulty tube heater!

Big decision now is to how much it costs to repair versus get a new one. Problem is that as it was working when it left friends house feel that I should get it repaired but other half is giving me a lot of grief re cost and time it will take.

Wish I'd never got into the situation now with the way things are at the moment!

Ollie Bollie

The heater inside the CRT can be checked with a multimeter in a few seconds. Similarly the supply voltage. I'm surprised the techie did not give a definite statement of the fault.
Mark

Location: UK

There was no glow at all from the heater. Everything else seemed to be making the right noises etc. 

I know that all repairs to B&O equipment is costly, but would I be right in thinking if this is the case it will be less than a picture tube replacement?

Thanks

Ollie Bollie

 

Ollie = Did u do static test? Before u condemn tube, test the heater supply side circuitry - it comes straight off the line output transformer - u should have continuity from tube base panel thru the heater winding. I looked at cct diagram and saw no fusible link - but there sometimes is a fusible resistor in this cct - make sure.  The transformer could be faulty , but special tester needed.  A new transformer might cost about £20 - i'm not too sure on this set.  Also Mark's comments apply as well - if heater cct in tube oc, tube is goosed!  I still think the problem is corruption - u could try going thru all the set-up pars - its all there in the Service Manual.  Are there any panel indications such as flashing leds ie flashing error codes?  All needs thinking about before it goes off to TV resting place! = Brian (Northumberland)

Brian

Thanks for coming back. 

All abit techinical for me I'm afraid - I'm not an expert by any means so a little unsure what your talking about. All I know is that I'm waiting for the engineer to advise the cost of repair to the tube heater as when he took the back off yesterday this was not driving the tube. Am at wits end as other half giving me real grief (due ££ and time involved) and also now have the situation that have got friends TV that was working fine but now broken - will I have to stump up for the repairs any how.

Really really wish I'd never got involved with this TV ......

Ollie

Which area are you in? In the unlikely event that you happen to be near Malvern, I'd be happy to pop over and have a look at it for you.

Mark

Location: UK

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