Hi group, My "new" R7A, SN:29xx, has a different design power supply board than is reflected in the R7 service manual PDF that I have. The one in the PDF is similar to the TR7 manual that I have (from the Hammanuals CD), less the fixed passband pots. This newer revision has the marking B 4935-A on the circuit board, and uses a TDA2002 in the DC-DC converter section instead of transistors. There is also an LM317 in the circuit.
Does anyone have a schematic on this later version that they can contrubute to the collective? 73 -Jim NU0C _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
