Yes, it seems that the chassis' of the Little Nipper C13D & the Nippergram U63C are indentical.

The Nippergram U63C is illustrated on the service manual and appears to be covered in a faux snakeskin.

I have posted a YouTube link in #25.

Honestly it sounds like the thing has only a tiny problem. Not sure what you mean by a fuzz box, maybe the tone control is turned all the way down?

Just watched the youtube clip.

The U63C as shown has a 3 speed Collaro auto deck. JamieLees unit is a 78 rpm only. So that would narrow it down to a U63A.

The U63 series all use the same case and chassis. U63A: 78 only, U63B: single play 33 1/3 & 45 & U63C: 3 speed auto changer.

Thanks for those model details.

Jamie: I have sent you the valve voltage table for the U63C. Such tables are very useful for initial checks on misbehaving sets.

Note that the values were determined with an old fashioned 1,000 ohms per volt analogue meter. However, a modern digital multimeter should come close enough.

Correct Monochrome, the radio part and case look Identical, but mine is an older 78 only turntable, faux snakeskin, Yes it has C13D and U63 written inside it. Thanks for the checks Robbbert, I will do as you have instructed tomorrow when I pull it back to bit's, I would be overjoyed to find the fault and fix it without having to resort to major parts replacement, I have a stock of resistors and caps now so should be able to nut it out, fingers crossed. Fuzz box is an early "guitar" distortion pedal which used diodes to turn the signal from the guitar to a clipped square wave, distortion in other words. Just using the term illustratively to describe the sound, like talking through tissue paper against a comb, a kazoo! Poor radio shouldn't sound like that ): I'm hoping it's a tiny problem. Some good pointers you have given me to hopefully find it. I suppose like with cars, punters always jump to conclude the most expensive catastrophic fault, when in most cases it's the simplest thing overlooked! Thanks guys, your making me feel much better, I have emailed Brad a photo. Thanks Robbert for the diagnostic procedure, a good learning curve here, makes a plus out of a minus, hopefully anyway! Cheers.

Cool, thanks GTC, that will be very useful whilst performing checks Robbbert has instructed, with additional voltage checks. The o/p transformer is definitely not oc, I thought maybe internally shorted thus giving less resistance than it should, but maybe not after reading comments, definitely no good in jumping to un-tested conclusions, so having said that I'll assume nothing until thorough testing rules in or out other causes. Thursday night the tone control was working and it was loud and clear either at the bass or treble end of the scale, now it in virtually inaudible at the bass end and soft and distorted at the treble, and the same either with the radio or phono as the source. Thank you GTC for your encouragement, It must be fixable, but I'm just a bit upset that I unwittingly allowed it to self destruct to this point. It just sounded so good to start with. I'll never make this mistake again, if it hums, I'll be straight away turning it off and investigating. I should have known, stupid of me.

Robbbert I can't express my gratitude!!! It's working like new!!! Worked my way down your list. C23 to C19 was about 6.5k so replaced with two 1 watt metal oxides now getting 4.98k, but R9 wouldn't even measure, relaced it with 220k and it's working like a new radio!!!
Thank you kindly sir, I am very happy to say!!!
And thank you all, GTC especially for your invaluable assistance! You guys re brilliant and I have learned lot in the last 48hrs!

That's excellent news!

Doing your own repairs is the proper way of learning.

Good to hear.

Given that the set was working well for a while -- apart from the hum -- it seems those resistors took a hit while you were listening to it.

Indeed! Those caps are obviously there to protect them! Well It just shows how important each component is and what happens if something is not how it should be.

Photos uploaded to Post 1.

Cheers, thank you Brad, in the photo it's just bunged together as it was pulled to bits whilst I was fixing it, looks neater now with all of the screws back in and knobs on properly!

Hello JanieLee.

What makes you think exactly that the transformer is at fault? What resistance does it measure? My experience is that output transformers of this era are normally completely open circuit, in about 95% of cases.
Your description sounds like the 6M5 is being overloaded, probably due to a leaky coupling capacitor from the previous stage, or grid emission, or silver migration between the pins. The 6M5 is notorious for the two later problems. The coupling capacitor will be leaky if it is original. Any of these problems will destroy the 6M5 in quick order.

Regards, Stuart

I know this is an old thread but I picked up a Nippergram from a vintage and retro shop recently.It's in fairly good shape and only has the knobs missing. I haven't checked it out yet.
Al I have done is unscrew the chassis and turntable and took lots of photos before I start.
The main reason I bought it was to resurrect a nipper radio which I attempted to repair.(on another thread)
I hope to trace out the circuit for the 'gram and compare the 2 and hopefully not wreck this one.

More patience required on my part.