20 Most Recent Grundig YB 400PE AM/FM/SW Radio - Page 6 Questions & Answers

You say Service manual and its is possible you are looking for the schematics of the radio or how to repair it. I admit I have no idea where you can get it. However, here is the link to the user's manual.

Go to www.ebay.com type make and model of radio, and scroll through the list, you might find what you are looking for.

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!

These models are out of production and also redundant. It is possible that the battery also had gone weak if the set does not power on, otherwise all what is needed is to get in touch with the nearest Grundig support center. http://www.grundig.co.uk/Audio.html