Re: Roberts RT7 - problem
No Maplins in St Albans, nearest Luton. Only 12 miles but I needed fixings and Maplins want £6 against £1.95 at Screwfix, and I had assumed the bigger lump was beneficial in terms of power. Thanks for some numbers Steve – did you mean 2U2R160 – 150 doesn’t show – it’s the same value anyway.
How about an equivalent for the .04uf value – would something higher suit?
Won’t know voltages across the OC81’s really until a proper battery is on, but I will check.
Surprised to learn the little PP3’s would last longer than the big lump. How about doubling up on the mAmp/hrs by putting two PP3’s in parallel? – Plenty of room!
Could a transformer (or whatever - like the in car chargers for mobiles) be used to step down from 12v dc external supply? If so what and how?
Rather than change one at a time, I’m with Grommet on renewing for certainty, but is there any likelihood of the resistors causing trouble? Lots of them little devils in there.
Better send before I think of another batch to bother everyone with!
Cheers - Derek
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