The Workbench

Re: Beovision MX 4500

justme — Fri, 18 Dec 2009 11:20:24 GMT

Well, folks, I am grateful for your feedback. After seeking out a local TV engineer, he had a look at it and repaired it. Judging by the receipt, he had to change the following: 2*10microF CAP, 1*4700 CAP, 1*1000 CAP, 1*6.6microF CAP (hope it makes sense).

Now it works!

I am crossing my fingers that it will keep working for another 9 years. If not, I shall bother you again with my questions.

Thank you very much for taking the time to reply and for your advice!

Re: Beovision MX 4500

solderon29 — Thu, 17 Dec 2009 06:11:17 GMT

Worth repair if the tubes still good.Will need some patience though as many caps will be suspect now.Very common failure is the deflection transformer,but available cheaply.

Do make sure you contact someone with B&O experience,as although the basic chassis is Thomson,there are suble differences with the B&O version.

Re: Beovision MX 4500

Die_Bogener — Wed, 16 Dec 2009 13:55:58 GMT

It's a very common problem, had it several times on some MX5000/3000. Bad electrolyth capacitors, they need replacement after this long time.

Very common are also bad solders on the mainboard.

Usually it takes 2-3 hours to rework the boards.

As long as there were not burning sounds or smoke, it's pretty easy to repair. It's a Thomson ICC5 mainboard, should be well known all over the world, probably built several million times...

A little guide for this mainboard is in the workbench section in the MX5500/3500 workshop.

Martin

Re: Beovision MX 4500

justme — Tue, 15 Dec 2009 17:27:06 GMT

Hi Peter!

Thank you for taking the time to reply. I have contacted the local B&O in Edinburgh and they recommended the engineer from Perth. I am reluctant to pay the £95 call out fee before I have any idea if it is worth doing it. Has anyone ever come across this symptom before to advise if it is likely to be a major fault or something small!?

Thank you once again for taking the time,

Re: Beovision MX 4500

Peter — Mon, 14 Dec 2009 10:24:10 GMT

Don't try and fix it yourself - voltages in the back are lethal and can remain even with the set unplugged. It could be as simple as a single component so I would tend to find a local TV repair shop and take it there. In the North East, the service department has been split off from the B&O stores and seems to offer excellent value for money and a lot of expertise. Terry has worked for B&O for many years and seems willing to tackle most things.

Beovision MX 4500

justme — Mon, 14 Dec 2009 08:43:37 GMT

Hi there!

I have had the privilege of owning a Beovision MX 4500 for the past nine years without any problems. However, recently, the TV refuses to turn on. When I attempt to do it, it produces a 'click' and then turns itself off.

I am not sure if this is a common problem, if it is an expensive problem or one that can be sorted out by a DIY'er. I do know that to call out an engineer will cost £95 before the cost of any spares or labour. I also do know that the cost of a 2nd hand replacement TV (like-for-like) is in the region of £400, hence my wondering of an easy DYI solution.

I am new to this forum and will certainly benefit from your advice.

Thank you very much for taking the time to read and hopefully assist.