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 Post subject: Re: BUSH TR82D anyone have anything on this radio
PostPosted: Oct Fri 05, 2018 3:06 am 
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Location: Ashhurst, New Zealand
Sorry to hear about your bike - they become quite personal after a few good rides - hope you get it back soon.

Here's the alignment info - hope the pic comes out well enough.

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Alignment text.jpg
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Attachment:
Alignment pic.jpg
Alignment pic.jpg [ 80.42 KiB | Viewed 582 times ]

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 Post subject: Re: BUSH TR82D anyone have anything on this radio
PostPosted: Oct Fri 05, 2018 3:11 am 
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...and the IF transformers...

Attachment:
Alignment IF transformers.jpg
Alignment IF transformers.jpg [ 31.05 KiB | Viewed 581 times ]

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 Post subject: Re: BUSH TR82D anyone have anything on this radio
PostPosted: Oct Fri 05, 2018 5:27 am 
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Joined: Dec Tue 08, 2015 12:53 am
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Location: shirley NY...Long Island
On step one, Im still not understanding the adjustment of L6/7/8. Are all three slugs in that one can?


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 Post subject: Re: BUSH TR82D anyone have anything on this radio
PostPosted: Oct Fri 05, 2018 8:06 pm 
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I would hazard a guess that although there are three coils in that can, only one is tuned by the slug....

Attachment:
Schematic sml.jpg
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 Post subject: Re: BUSH TR82D anyone have anything on this radio
PostPosted: Oct Fri 05, 2018 10:13 pm 
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Joined: Dec Tue 08, 2015 12:53 am
Posts: 414
Location: shirley NY...Long Island
Well the bike...now I went to align the BUSH..and Dammmmmmm core BROKE.....on the IF coil number 1...now what to do..
getting sick with anger, no joke.
KNY


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 Post subject: Re: BUSH TR82D anyone have anything on this radio
PostPosted: Oct Sat 06, 2018 1:42 am 
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Joined: Jan Tue 31, 2012 1:55 am
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Location: Mountains of Mourne. Ireland.
Never use a metal screwdriver. Make you own alignment tools by filing down some plastic chopsticks, or buy a set.

With ferrite tuning slugs...
In the beginning... If they don't move freely with a small amount of force... STOP
apply a few drops of alcohol/Zippo lighter fuel and jet some heat into the hole with a hot hair dryer or touch them a few times with a relatively hot soldering iron, or heat a finishing nail (held with pliers) and touch the slug.

If I'm not mistaken these are 4mm - 5/32" plain-slotted ferrite slugs, (cannot remember their length).
You will have to dig out the broken piece. Take your time.

If you have or obtain smaller ones, you can wrap some thread around them to make them screw in and out a few times. If your alignment is successful, apply one or two drops of hot candle wax.

Search ebay→ for ferrite slugs
Image
Greg.


If you are going to replace the capacitors in this radio, an alignment should be done last... :)


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 Post subject: Re: BUSH TR82D anyone have anything on this radio
PostPosted: Oct Sat 06, 2018 3:46 am 
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Joined: Dec Tue 08, 2015 12:53 am
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Location: shirley NY...Long Island
I understand about the screwdriver and did it anyway...Im so p.....at myself...they are a little smaller than 3/16 so you are right..probley 4 mm or 5/32. I have a piece and measured it...with a caliper and it was close to 5/32.
I took a core out of a tv and it was too large..so I filled it down with a ax sharpening stone..first I made 4 sides and made it like a square..then filed a little more on the sides until it fit..
I did get it to work but, I dont know about you, but when I repair something if its a possibility that it is wrong I will not feel good about it...and it eats at me..

You have any ideas who, or if someone sell's this part..

thanks for your help.......Kenny


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 Post subject: Re: BUSH TR82D anyone have anything on this radio
PostPosted: Oct Sat 06, 2018 5:20 am 
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Joined: Dec Tue 08, 2015 12:53 am
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Location: shirley NY...Long Island
I checked it with a micrometer and it is right at 4.5mm. or right at 0.1563 inch's


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 Post subject: Re: BUSH TR82D anyone have anything on this radio
PostPosted: Oct Sat 06, 2018 4:39 pm 
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Location: Mountains of Mourne. Ireland.
What are the Transistors TR1
TR2
TR3
and TR4?

Is this photo (below) that you posted earlier, your radio or is from the web?

Image

What date is on the 8μF capacitor directly above TR4?

Greg.


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 Post subject: Re: BUSH TR82D anyone have anything on this radio
PostPosted: Oct Sat 06, 2018 6:32 pm 
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Joined: Dec Tue 08, 2015 12:53 am
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Location: shirley NY...Long Island
Hi..wow I didn't even see that date on there until you said something..

Yes that is a photo of the exact radio..or this photo is my radio...

The date on the cap is Sept 62

Below is the part or cap..

Kenny


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Last edited by Kennynva on Oct Sat 06, 2018 7:35 pm, edited 1 time in total.
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 Post subject: Re: BUSH TR82D anyone have anything on this radio
PostPosted: Oct Sat 06, 2018 7:18 pm 
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Location: Mountains of Mourne. Ireland.
Bush TR82B Trader Service Sheet 1459
https://www.doctsf.com/documents/schema ... /TR82B.PDF

Are these your transistors?
See general notes about TR4 for different values in earlier version.

Was the radio working when you received it?
Greg.


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 Post subject: Re: BUSH TR82D anyone have anything on this radio
PostPosted: Oct Sat 06, 2018 8:17 pm 
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Location: Ashhurst, New Zealand
Those are all the OC series of transistors as shown on the schematic. The two OC72's are in little sleeves to clamp them to the chassis. AF series are in tin can TO5's (?).

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 Post subject: Re: BUSH TR82D anyone have anything on this radio
PostPosted: Oct Sat 06, 2018 9:58 pm 
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Joined: Dec Tue 08, 2015 12:53 am
Posts: 414
Location: shirley NY...Long Island
Yes Egg the radio worked when I got it...but, being the person I am...I needed to see if it was in alignment, and doing so..broke the cores of the IF transformers...all the transistors are good..
Yes...I messed up...and learned from it..and now it is playing but I can tell it is not as sensitive as it was when I got it..which was like 4 days ago..

Kenny


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 Post subject: Does anyone know what size alignment tool bush tr-82
PostPosted: Oct Thu 11, 2018 6:33 am 
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Joined: Dec Tue 08, 2015 12:53 am
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Location: shirley NY...Long Island
Hello does anyone know what size alignment tool is used for the tuning slugs in the IF transformers?

It looks rectangular, but only about 2 mm across and 1 mm high

Kenny KE4HVE


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 Post subject: Re: Does anyone know what size alignment tool bush tr-82
PostPosted: Oct Thu 11, 2018 6:29 pm 
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Joined: Dec Tue 08, 2015 12:53 am
Posts: 414
Location: shirley NY...Long Island
Hello...here is the IF transformer core that I need the tool for ..does anyone know where to get this tool...

Thanks Kenny KE4HVE


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 Post subject: Re: Does anyone know what size alignment tool bush tr-82
PostPosted: Oct Thu 11, 2018 6:55 pm 
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Joined: Jul Mon 26, 2010 8:30 pm
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Location: Annapolis, MD
The aspect ratio in that picture looks more like 3:1

My kit from G-C has at least 2 that are in that ballpark---the closest is the GC-8606, which is about 2.5 x 0.8 mm (there's the 3:1 aspect ratio).

I would get a kit here:
http://www.gcelectronics.com/order/SubC ... 80-387.pdf

I also make my own using---eg---plastic-handled paint brushes from Michaels and similar sources.

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 Post subject: Re: Does anyone know what size alignment tool bush tr-82
PostPosted: Oct Thu 11, 2018 7:03 pm 
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Joined: Jan Tue 31, 2012 1:55 am
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Location: Mountains of Mourne. Ireland.
Make your own by filing down plastic knitting needles (Hobby lobby or pay grandma a visit)
or... plastic chopsticks, both made from hard-wearing material.

I see you have discovered that the slot runs all the way through. You might need to gently rock two tools, top and bottom to free it. It may already be bottomed-out/run out of threads in the plastic former (one end)!

Greg.

oh... don't forget to apply some heat and Juice... :)

Edit: don't be lazy... unsolder the connections (taking notes) and remove the can.
It will be a lot easier to perform your surgery on the bench (gently secure in an engineer's vice).
Mark one side of the can + chassis with a Sharpie.
If you remove more than one at a time, mark them A, B, C, etc.


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 Post subject: Re: BUSH TR82D anyone have anything on this radio
PostPosted: Oct Fri 12, 2018 12:31 am 
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Joined: Dec Tue 08, 2015 12:53 am
Posts: 414
Location: shirley NY...Long Island
Got it...thanks...There are two cores in each of the IF cans..I have broken some of them being inpaitent and dum.............b... or trying to do it thinking it will work

I have made some out of air guages before, just pull it apart and file it down

BUT I cannot take that chance without the right tool again..

I have two IF transformers coming from the UK now...and it will take a while to get them..So I got lucky to find them...and will not take a chance anymore..

That is why Im asking about the tools that are made for the job,,,I realize and kinda knew that to turn the cores your tool should go all the way thru the cores so you are not trying to turn it from something like 1 mm from the top only...which doing that will break it off, or worse, crack the entire core, which is what I did..

Thanks...I will look at the tools listed here...and then see...I just thought that someone on here could say 100% that it was such and such tool...


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 Post subject: Re: BUSH TR82D anyone have anything on this radio
PostPosted: Oct Fri 12, 2018 1:19 am 
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Joined: Dec Tue 08, 2015 12:53 am
Posts: 414
Location: shirley NY...Long Island
I just took another measurement with a micrometer, and checked a screwdriver that would LIGHTLY fit in a good slug and got this

0.450mm top to bottom or the thinnest part
0.100mm wide side to side..left to right.

I think it is in decimal size
0.0025- thousandth of an inch's top to bottom or the thinnest part up and down.
.0080 thousandths of an inch's...wide....I dont know about these measurements..

It that makes since...

KNY


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 Post subject: Re: BUSH TR82D anyone have anything on this radio
PostPosted: Oct Sat 27, 2018 3:10 pm 
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Location: Mountains of Mourne. Ireland.
Kennynva wrote: Hello...does anyone know if the IF transformers are the same for a TR82C and a TR82D. I have a diagram of the D version but not the C version..and it is different..

Part numbers for the D version are
1st and 2nd IF's BS67525
3rd is a BS67526
and the Oscillator is number CS67535 it is L8 on the schematic.

Thanks Kenny KE4HVE

----------

Service information for Bush TR 82 C MK I
https://www.doctsf.com/grandlivre/fiche ... 015&ori=ps

Greg.


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