Bush TR130 fault - Page 2 - UK Vintage Radio Repair and Restoration Discussion Forum

Nuvistor · 22nd Nov 2015, 8:01 pm

But as Simon stated, his TR130 has ample volume between a third and a half of the control, are you saying that even at full volume it is not loud enough and is also distorted?
If so then you have a fault, if there is ample volume at half setting with no distortion then I would think it was not faulty.
Frank

gary_crutchley · 22nd Nov 2015, 11:47 pm

This weekend I replaced three AF117's in an Ever Ready Sky Master. The AF127's are readily available on eBay, I paid £7.77 for the three I needed, including postage. I thought that was reasonable.

The replacement process was straightforward, you can read what I did here:

https://www.vintage-radio.net/forum/...d.php?t=121007

The main thing to be aware of is that the pin-out arrangements on the AF127 is different to the AF117.

Regards,

Gary

Pete_kaye · 24th Nov 2015, 3:33 pm

Yesterday , the third AF117 failed and I replaced it with a NOS one.
This works but is quieter across the LW than before but no noticeable change on MW. Does it need alignment check now that all three transistors have been replaced ?
I measured the defunct TR3 on my component tester and it gave B=3, Vf=0mV. Not very good .I tried zapping with a 9v battery for 1 second and the readings returned to original ie B=65,Vf= 230mV. I will test again in a week or two. Interesting.

Pete_kaye · 29th Nov 2015, 4:25 pm

Here are 2 short videos of this set with distortion on speech and music.

https://www.youtube.com/watch?v=mlZef6rZ4bc

https://www.youtube.com/watch?v=dHrxb5p5zmM

22nd Nov 2015, 8:01 pm	#21
Nuvistor Dekatron Join Date: Aug 2013 Location: Wigan, Greater Manchester, UK. Posts: 9,433	Re: Bush TR130 fault But as Simon stated, his TR130 has ample volume between a third and a half of the control, are you saying that even at full volume it is not loud enough and is also distorted? If so then you have a fault, if there is ample volume at half setting with no distortion then I would think it was not faulty. Frank

22nd Nov 2015, 11:47 pm	#22
gary_crutchley Heptode Join Date: Apr 2013 Location: Bloxwich, West Midlands, UK Posts: 554	Re: Bush TR130 fault This weekend I replaced three AF117's in an Ever Ready Sky Master. The AF127's are readily available on eBay, I paid £7.77 for the three I needed, including postage. I thought that was reasonable. The replacement process was straightforward, you can read what I did here: https://www.vintage-radio.net/forum/...d.php?t=121007 The main thing to be aware of is that the pin-out arrangements on the AF127 is different to the AF117. Regards, Gary

24th Nov 2015, 3:33 pm	#23
Pete_kaye Octode Join Date: Jun 2005 Location: Sheffield, South Yorkshire, UK. Posts: 1,227	Re: Bush TR130 fault Yesterday , the third AF117 failed and I replaced it with a NOS one. This works but is quieter across the LW than before but no noticeable change on MW. Does it need alignment check now that all three transistors have been replaced ? I measured the defunct TR3 on my component tester and it gave B=3, Vf=0mV. Not very good .I tried zapping with a 9v battery for 1 second and the readings returned to original ie B=65,Vf= 230mV. I will test again in a week or two. Interesting.

29th Nov 2015, 4:25 pm	#24
Pete_kaye Octode Join Date: Jun 2005 Location: Sheffield, South Yorkshire, UK. Posts: 1,227	Re: Bush TR130 fault Here are 2 short videos of this set with distortion on speech and music. https://www.youtube.com/watch?v=mlZef6rZ4bc https://www.youtube.com/watch?v=dHrxb5p5zmM