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How to open the battery case and how to replace the batteries for the Grundig Mini 300 WorldBand Receiver

No. I see an arrow but I am afraid of breaking the radio because it will not open. It says on the back F C C E made in China Battery DC 3V

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Press down somewhat firmly on the battery cover and slide with your thumb should slide off....Just be careful not to snap or break the tabs that attach the battery door to the body of the radio. It's really very simple!!!

Posted on Dec 22, 2014


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I Have a Grundig 300 Mini handheld radio. I accidently dropped it in the toilet and the water from it got inside it and damaged it. The AM and the display went out but can that be repaired?

sad to say but it probably is not worth what it would cost . try drying it in a bucket of dry rice for a few days . if it does not work after that discard and get a new one

Aug 01, 2015 | Grundig Mini 300 AM/FM/SW Radio

1 Answer

I dropped this radio into a toilet water from it got inside and damaged it can that be repaired

Take the battery out and stick it into a bin (or bag) of uncooked rice for 24 to 48 hours; this should draw out any moisture in the unit. If that doesn't fix it consider looking for a new one.

Aug 01, 2015 | Grundig Mini 300 AM/FM/SW Radio

1 Answer

I have a Grundig Mini 300 World Band Receiver and the power button has stopped working so I cannot turn the radio on.

Spray some WD-40 on the on/off button and press and release the button multiple times. This will clean the gunk built up on the micro-switch and make a better connection.

Jan 05, 2012 | Grundig Mini 300 AM/FM/SW Radio

1 Answer

My speaker on my Grundig mini 300 does not work....Do you have any suggestions...

Open the unit up and check the speaker is working, speaker may be blown.

Sep 30, 2010 | Grundig M300 AM/FM/SW Radio

1 Answer

Broken antenna on grundig mini 300 radio

Replacement is possible, the back of the radio needs to come off and there is a screw at the bottom of the antenna. Remove this and the old one will slide out and simple to install new one. Call Eton for replacement, can be foung with a google search....

Feb 14, 2010 | Grundig Mini 300 AM/FM/SW Radio

1 Answer

Displayed low battery msg then shut off and won't work even with charger

Most likely the battery has died - not just as in out of charge, but has lost the ability to hold a charge at all. This happens to rechargable batteries, and the thing to do is to replace the battery with a new one.

Unfortunately the XNAV3550 has an "integrated" battery, meaning you'd have to open the case (and void your warrenty) to replace it yourself. If the unit is still under warranty, contact Dual for a replacement. If the warranty has expired, then you might (if you're comfortable doing so) open the unit and see if the battery is easily replaceable. Otherwise I'm afraid you're out of luck. :-(

Oct 06, 2009 | Dual Electronics XNAV3550 Car GPS Receiver

1 Answer

Grundig Satellit 700 World Receiver. AM bands are dead.

Ist Local Oscillator (PLL) stops working. It's desiged with bare minimum feedback to keep it's output reasonably clean. Removing (De-soldering) the screening box reduces losses, but it's still marginal. Something in the osc. circuit is temperature sensitive, so squirting it with freezer spray - or putting the set in the 'frig will get it going again. Have one like this, "Repaired" - been going for about 5 years and just quit again! If I get any better luck next time, I'll re-post this!

Aug 15, 2009 | Grundig Audio Players & Recorders

2 Answers

Grundig yacht boy 400 radio does not work with mains operations

I had the same problem. Examined the wire from the transformer,and found a break. Repair of the wire solved the problem. WLD

Mar 01, 2009 | Grundig YB 400PE AM/FM/SW Radio

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