09-12-2013, 07:29 PM
(This post was last modified: 09-12-2013, 07:40 PM by Robert Darwent.)
(09-12-2013, 07:13 PM)Joe Wrote: I'm in Millhouses and the Absolute/Radio Sheffield transmitter is on Broadfield Road.
I wasn't aware of the transmitter on Broadfield Road, only knew of Tapton Hill. Anyway, same difference - you're virtually on top of it signal wise as I am with Skew Hill.
(09-12-2013, 07:13 PM)Joe Wrote: I've just double checked that the transistor is correctly fitted, ie the leg next to the red dot goes to pin 6 of the L6/7/8 can, the middle one goes to the junction of a 100kΩ and a 22kΩ resistor and the other to pin 1 of L6/7/8.
TR1 is correctly fitted if the leads are; Blue (Collector), Green (Base), Yellow (Emitter) - from left to right looking at the chassis as its normally fitted into the set. All the other transistors follow the same colour code on their leads but are fitted the opposite way around, ie: Yellow, Green, Blue.
The readings you've took are within the range expected, but I still suspect TR1 is low gain and the source of the problem. Might be worth checking by substitution if you have a spare OC44, failing that even transposing TR1 and TR2 temporarily and see what happens.
Regards
