No big secrets. A quick search at Kenwood Parts East
provided part number, and current price (it is in stock). Part (bulb) is used in several radios.
B30-0865-25 LAMP TM-721A TM-731A TM-741A TM-641A $3.58
Kenwood Parts West
Service manual will have disassembly pictorials and parts list with Kenwood part number and specs.
K4EAA sells bulbs used in Kenwood hybrids.
Rated 12V, 50 ma, 4mm dia., 6" wire leads.#
Long life, and brightness & color matches originals perfectly.
W5CIA also sells bulb on eBay.
As far as the dimmer mode --- that can be problematic with LEDs
Last edited by W9GB; 04-08-2012 at 06:27 PM.
We keep moving forward, opening new doors, and doing new things, because we're curious and curiosity keeps leading us down new paths. -- Walt Disney