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Various problems may cause no power condition: Dead AC transformer; defective power regulation circuitry; dead microprocessor or display electronics; liquid damage; cracked circuit board; open current limiting resistors .. and more. If needing professional service, Ship radio and contact info to:
117 Windsor Ave
Hurley, WI 54534
Their Certified Tech Repairs These Units, average
cost between $100 to 145 plus return shipping to repair all problems,
replace all defect parts, clean inside and out, and adjustments.
I constantly read frequent requests for RADIO CODES referring to the disconnection of battery power ( whether its for changing the battery, etc.) and the radio is nowINOP. Here is a simple way to save radio codes, radio stations, clock time and computer settings. Purchase from an auto parts dealer, a 9 volt battery powered lighter socketconnector. Plug into lighter, do your battery work, After work is completed, disconnect, and radio will work as before. Unit will cost less than 20.00 and well worth it.
You didn't mention which model of the Wave Radio you have but since you have a 9V battery it narrows it down to a couple of models. You might want to check the Q4 transistor (2SC3792) for a short on the two outide pins. With the power disconnected, measure with a multimeter the resistance between the two outside pins of the Q4 transistor. If you measure anything between 0-3 ohms it is shorted. Replace this part with a similar part or you could replace it with the new Bose recommended part - 2SD438F-MP-E but it is very hard to obtain. I have used an 2SC2655 instead and had no problems so far with the radio. This radio also came in totally dead with no display nor the radio working.
Hey Pete! Did you take out the 9V battery as well and let power down to re-set? Benimur from JustAnswer suggested: Your described problem could either be a system glitch, hardware fault. If it were a glitch, unplug the unit for an extended period of time to force the Bose to reset and revert to factory defaults. This would also require removal of the 9 volts battery. Should this be not corrective, then it would seem that the logic circuitry of the Bose radio is faulty. The logic circuitry includes the micro processor that handles all the controls and the displays. Unfortunately, not a user doable repair.
There's a line fuse inside the radio, mounted on a PC board. CAUTION:
disconnect the set from power before opening the case or poking around
inside. The fuse could be bad, but these sets are notorious for losing
the power transformer. If the fuse is ok then you are looking at a
$100 repair fee from Bose. You might want to check out the new HD radios -- better sound, MUCH lower price.