Ultra 6336 music centre, circa 78 - UK Vintage Radio Repair and Restoration Discussion Forum

Pledwick13 · 25th Apr 2019, 2:20 pm

Hi I have acquired an Ultra 6336. can anyone advise where may get a replacement transformer. Input ok but no output from it. It has two standard and one centre tapping from output side.

Cheers

Nuvistor · 25th Apr 2019, 3:05 pm

Is there a removable thermal fuse in the primary winding? Quite common at that time and easy to replace.
Obviously if there is and it’s blown you need to find out why.

Ed_Dinning · 25th Apr 2019, 8:05 pm

Hi, you may be able to get an equivalent type if you study the schematic; failing that you can have the original rewound.

Ed

vinrads · 25th Apr 2019, 8:20 pm

When you say input ok do you mean there are volts on the input ,or the primary reads ok on the test meter , I must say it is unusual for the secondary to be open circuit , check for thermal fuse in the windings .Mick.

sortedradio · 27th Apr 2019, 9:38 am

"It has two standard and one centre tapping from output side", do you mean that it has 3 secondary winding's? It is unusual for all to be open circuit! Can you measure the resistance of the primary winding?

25th Apr 2019, 2:20 pm	#1
Pledwick13 Retired Dormant Member Join Date: Apr 2019 Location: Wakefield, West Yorkshire, UK. Posts: 1	Ultra 6336 music centre, circa 78 Hi I have acquired an Ultra 6336. can anyone advise where may get a replacement transformer. Input ok but no output from it. It has two standard and one centre tapping from output side. Cheers

25th Apr 2019, 3:05 pm	#2
Nuvistor Dekatron Join Date: Aug 2013 Location: Wigan, Greater Manchester, UK. Posts: 9,431	Re: Ultra 6336 music centre, circa 78 Is there a removable thermal fuse in the primary winding? Quite common at that time and easy to replace. Obviously if there is and it’s blown you need to find out why. __________________ Frank

25th Apr 2019, 8:05 pm	#3
Ed_Dinning Dekatron Join Date: Jan 2004 Location: Newcastle upon Tyne, Tyne & Wear, UK. Posts: 8,194	Re: Ultra 6336 music centre, circa 78 Hi, you may be able to get an equivalent type if you study the schematic; failing that you can have the original rewound. Ed

25th Apr 2019, 8:20 pm	#4
vinrads Dekatron Join Date: Feb 2009 Location: Chesterfield, Derbyshire, UK. Posts: 3,755	Re: Ultra 6336 music centre, circa 78 When you say input ok do you mean there are volts on the input ,or the primary reads ok on the test meter , I must say it is unusual for the secondary to be open circuit , check for thermal fuse in the windings .Mick.

27th Apr 2019, 9:38 am	#5
sortedradio Heptode Join Date: Jan 2008 Location: Sheffield, South Yorkshire, UK. Posts: 655	Re: Ultra 6336 music centre, circa 78 "It has two standard and one centre tapping from output side", do you mean that it has 3 secondary winding's? It is unusual for all to be open circuit! Can you measure the resistance of the primary winding? __________________ Martin BVWS member GQRP Club