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Sharp GF-9090 - bluetooth addition

sharp gf-9090 bluetooth

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#1 mikeplow1961

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Posted 14 September 2019 - 05:13 AM

Hello everyone. I've just, literally half an hour ago, impulsively bought a Sharp GF-9090 off ebay.


The Sharp GF-9090 Bought one in 1978 for the then very considerable sum of £200 ( £2.25 a week from Mrs Goddard's Littlewoods cataogue) which seems to be roughly what one in decent and full working condition is going for 40 years later. This was and still is a thing of beauty. This thing was my constant companion and assisted in shaping my musical tastes from the age of 16 to my early 20's. To this day, I still get a flutter in my heart when I see a picture of one. To think I will be the owner of one again soon is quite something.

I've pipe dreamed with the idea of one day getting one and either gutting and converting to bluetooth or adding bluetooth to the existing system. (I'm hoping to do the latter) I have minimal electronics knowledge but am an IT Technician/gadget geek so disassembly and having a bash etc holds no fears.

Description described it as not fully working with the cassette playing slow etc (I assume it'll be decomposing belts). I'm hoping it will arrive in a week or so. The first thing I want to do is order a bluetooth board for it.

My first question, and I'm sure it will be the first of many is what output board should I be getting. I am, possibly wrongly, assuming that if I am going to tap into the cassette players preamp, I would need a very low output (or non amplified?) board than if i was gutting the case and feeding directly to the speakers. The speakers are listed as 2x3.5w and 2x5w,

I've seen a Youtube video where someone has done this on the same model but it just shows it working. I've messaged to the poster so am hoping I might get some advice from them.

Finally, thanks for letting me join. Any advice, tips, pointers will be very gratefully received. (And needed!)


#2 goodman

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Posted 14 September 2019 - 07:56 AM

Hello and :hi: to forum.
Of Course is possible to add BT receiver and keep radio and cassette.

There is some steps to do this:
- Find service manual;
- Find the place to connect BT module to amp and power supply;
- Buy all parts that you need;
- Make modification;

Post many photos of modification process.

Which video did you see?

Good luck.

Also tagged with one or more of these keywords: sharp gf-9090, bluetooth