Question about Grundig S350 AM/FM/SW Radio
This radio is also an Eton s350. It is a popular radio but I just can't find a service manual - I can't even open the case!
No display, won't turn on. I believe I may have plugged in the wrong adapter as I smelled something burning - my bad. I'd like to open it; I removed all the screws but it wouldn't come apart. I think I may have burned up a zener diode.
Does anyone have a schematic?
Look on back of unit. There are 7 screws. 3 are along to and 2 are beside battery door. Last 2 are in battery compartment. All require a #2 Phillips or "cross blade" screw driver. I have to assume you had either incorrect voltage or incorrect polarity. There is a rectifier diode that should prevent damage from wrong polarity connections. Too much voltage may destroy a filter capacitor or more. It's difficult to say till you open the box and investigate. Burn damage should be visual and may give you a clue where to start.
Posted on Mar 03, 2010
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Posted on Jan 02, 2017
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