Tag: Blutune

Roberts Blutune T2 breakdown and fault finding

The radio has been received see here: Not just Dead….Fully dead and if I can’t get it going, I have at least brought a very tidy storage box.

What surprised me when first opening up this radio was the immense amount of boards and circuitry inside, I must admit I took a gulp at this and questioned my reasoning for purchasing the item. However it’s all a learning curve and I have to start somewhere, gone are the days of simple circuits on traditional radios (with big components).

Roberts blutune circuitry
Roberts blutune power board
Roberts blutune circuitry

I arrived home from work and sat myself down in the conservatory surrounded by test devices for about 4 hrs until I totally overloaded my self with information, creating more questions than answers, i decided to give up for the day and further research the potential faults for this unit via other sources.

To me the power board seems fine, power is going where it should, there appears to be no short circuits or component damage however in places there does seem to be some signs of leakage so I may have some components that need replacing or maybe it’s just remnants of flux and stuff left behind after initial construction.

Blutune board under microscope
Blutune board under microscope

None of this can be seen by the naked eye but it becomes apparent after being placed under my new toy an Andonstar microscope viewer. It’s at the entry end of the range but it is already becoming a game changer for me, due to my failing eyesight.

Andonstar AD106S

Copyright Andonstar

Further investigation appears to highlight an inherent issue with this range of radios when they just seem to stop working (probably why Roberts ceased production).

Generally the power board isn’t an issue, it all focuses around the display board where a controller to the screen has failed or the amplifier chip has failed, hooray I say! And then I find out both components are about the size of a grain of rice… Boo I say.

I have no experience at all in components this minuscule in size, but if I can’t get to the root cause and eliminate all other possibilities I will give it a go. In the meantime fault finding will go on between other jobs and this will continue to be a job in progress that will be revisited and updated as time goes by.

The plan short term is that I’m going to borrow a thermal camera and check if there are any hotspots under electrical load. You never know I might just find something.

I shall comeback to this project at a later date.

Thanks for passing by. Stay safe, be superb. You’re a star 🌟

Not just Dead….Fully dead

I have just brought this inoperative Roberts Dab Blutune T2 digital radio off of EBay for £8 (GBP). I managed to barter the price down a bit from £12 and I was quite pleased with myself for doing that.

Roberts Blutune T2
Roberts Blutune T2

So today I have received the package. A lovely little item cosmetically in good condition with the only external damage being that the speaker cover has a tiny tear in it , and the very tip of the aerial is broken along with the plastic stop that secures it when in the down position….no real issue, all easily dealt with.

The concern is the label on the top of the unit. Fully Dead!

Roberts Blutune T2

So what’s that then? Is there an in between? Some sort of purgatory for audio systems, or is it a way of saying that someone has ensured it will never work again?

Well, I’ll get the back off tomorrow and have a rummage to see what’s in store for me. Maybe my bartering of the price has meant the seller has removed all internal contents so that I now have a nice “Empty box”.

I just love some of these descriptions sellers use, makes me giggle and wonder what was going through their minds when they decided to sell an item that is fully dead.

Maybe there is just different grades of death that I was just not aware of.

You can find the assessment and repair attempt here: Roberts Blutune T2 breakdown and fault finding

Anyway, thanks for passing by, be safe, be happy.