In article ,
Brian Reay wrote:
On 27/04/2020 17:01, Dave Plowman (News) wrote:
In article ,
Dave Plowman (News) wrote:
Spoke a bit too soon. One has arrived, and powers up just fine. But is
tuned to the trnasmnitter wherever it came from, but not London. And the
child lock is set. It doesn't need to be set at all to use the tuner, so
no factory code like 1234 as on many things. So I'd guess if someone went
to the bother of setting it, they'll have used their own number.

Googled for factory reset and found two ways. Neither of which works.

Seller is just a dealer so doesn't know the code.

You get three goes at entering the code then it locks up for a while
before you can try again. Dunno for how long.

Bit more Googling found 1,9,left,blue, 0,0,6 got it unlocked.
Went to retune, but showing no signal in software.

Had another look for the spare SMPS ICs and found them. TOP 244. Fixed
the original. It shows full strength and quality on the same aerial
feed and working OK again.

Given I only paid £11 including postage, not worth the bother of
sending it back, since I'd have to take it to a collection point or
pay extra for home collection.


Is the one you've just bought the same model as the existing one? If so,
can't you use some of the bits to repair the old one?

The only thing that has failed on any of the existing ones is the TOP244.
And when that first failed, I bought 5 spares. Given as is often the case
with electronic bits that P&P can be a big part of the total cost.

I'm also curious what these beasts are. At first I assumed you'd rigged
up some custom system using standard Sony units - perhaps with a control
system you'd built etc but now I'm thinking it is a commercial system,
perhaps like you'd find in a Hotel etc.

They are a standard FreeView tuner that you'd have once bought to convert
an analogue only TV. Since all new TVs include FreeView, not much demand
now.

I'm using them sound only. The aerial feed daisy chains together unlike FM
etc receivers, making that side simpler.

It all dates back years. In the 80s, FM reception in this part of London
was poor. Meaning a portable radio etc simply didn't work well. So decided
on a high quality audio distribution system to every room - run on 10 pair
telephone cable.

You could then decide what final audio quality you wanted in each room by
the choice of amps and speakers.

Bathroom has ceiling speakers. Kitchen area (much used) LS3/5a.

Assuming listening to the same channel, no audio delay between rooms.
Unlike things digital. ;-)






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--
*Gravity is a myth, the earth sucks *

Dave Plowman London SW
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