Polly, my Picasso had her MoT today and I had a lung health check, an initiative to check ex-smokers for early signs of lung cancers.
We both passed with flying colours

Polly's good for a year and I'm good for at least 5 before my next routine check...
Zel popped round and we had a second attempt at enabling cruise on his Partner. Zel will have lots more to say about that

Here, I'll just say we learned a lot of new knowledge
I then spent some time on the XM radio project...
First job was to extend the audio preamp board on extensions so I could properly diagnose it...
Tests have proved beyond doubt the tape head amp/Dolby thick-film module is faulty.
Despite finding a potentially suspect electrolytic on it, these modules are effectively irreparable. Game over perhaps but no, not likely, given the reason I'm doing this work..
My plan is to build a substitute module using NE5532 op-amps. It won't have Dolby functionality but I think that's a small price to pay. I looked at building from scratch but for less then the cost of individual components, ready-made preamp modules are available from eBay. Two are on order.
If that all works, I'll then look at adding Bluetooth to it, either in place of the cassette tape functionality or in addition to it... Fundamentally, it has a very high quality tape deck - as is the rest of the radio.
Watch this space
