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 Power Transformer Problem on Kriesler 11-71
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 Return to top of page · Post #: 46 · Written at 11:20:50 PM on 9 December 2009.
CaptHowie's Gravatar
 Location: Bentleigh East, VIC
 Member since 25 October 2009
 Member #: 568
 Postcount: 39

Thanks for the offer Brad, but I can't see your email in your profile. My email is mailbox at graphicgraffiti dot com dot au so if you send a message to that I'll reply to that with the photo.

I really want to get this radio working, and thanks for all the help so far.

Thanks,
Tim.


 
 Return to top of page · Post #: 47 · Written at 12:37:43 PM on 11 December 2009.
CaptHowie's Gravatar
 Location: Bentleigh East, VIC
 Member since 25 October 2009
 Member #: 568
 Postcount: 39

I thought I'd do this to help you out. I photographed the whole circuit with my SLR camera on a tripod. It's high-resolution so you can zoom into every part of the circuit, probably the next best thing than having the radio in front of you. Smile

http://www.graphicgraffiti.com.au/storage/radio_circuit.jpg

It's 1.5MB, so I hope that's not too bad as it's a huge panorama shot of the circuit. It's very clear, so you should be able to pick everything out. The terminal strip in question is on the far left with the capacitor and two resistors. See how those wires just terminate there without anything else connected?

If you need anymore photos, don't hesitate to ask. If I could get this working I'd be absolutely delighted.

Thanks,
Tim.


 
 Return to top of page · Post #: 48 · Written at 12:52:51 AM on 12 December 2009.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5257

I have saved photo & will have a look at it in an Imae program.

Marc


 
 Return to top of page · Post #: 49 · Written at 10:16:25 PM on 12 December 2009.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5257

Information & comment sent to Brad
Comments also added to photo

Marc


 
 Return to top of page · Post #: 50 · Written at 10:37:56 PM on 12 December 2009.
CaptHowie's Gravatar
 Location: Bentleigh East, VIC
 Member since 25 October 2009
 Member #: 568
 Postcount: 39

So just wait for Brad to post?

Tim.


 
 Return to top of page · Post #: 51 · Written at 12:07:48 AM on 13 December 2009.
Brad's avatar
 Administrator
 Location: Naremburn, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 7306

Tim, Marc sent me some info via e-mail. Do you mind if I pass it on?


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A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 52 · Written at 2:54:00 PM on 13 December 2009.
CaptHowie's Gravatar
 Location: Bentleigh East, VIC
 Member since 25 October 2009
 Member #: 568
 Postcount: 39

Hi Brad, Go ahead. I think I posted my email address above.

Thanks,
Tim.


 
 Return to top of page · Post #: 53 · Written at 7:02:37 PM on 13 December 2009.
Brad's avatar
 Administrator
 Location: Naremburn, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 7306

All sent. The attachment is a big one so it may take a few minutes to download.

On an unrelated subject, you guys will notice later tonight (or next time you visit) that two extra functions have become available in your posts.

The first is post signatures. If you entered a signature when you registered it will appear in all posts you make automatically in future. If you didn't include a signature when registering don't worry. You'll soon be able to update your details which will allow you to include one, amongst being able to change other things relating to your account, such as password and e-mail address. This will be the next thing I add to this website.

The second thing is a link at the bottom of your posts that will allow you to edit your posts after they have been posted. This has been a very popular request from members and should be working later tonight. So if you have made a post recently and have been niggled by that spelling mistake that stands out like a sore toe, you'll be able to fix it up licketty split. Smile

These two features will be rolled out across all seven forums at the same time and will be available to all members.


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 54 · Written at 8:09:35 PM on 13 December 2009.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5257

Brad I welcome the edit function, there are other sites with this and it is extremely useful. Especially if you realise the grammar is crap, or you have left out, or need to add more detail.

As we need the detail in the posted image; I left it much as it was, to avoid the losses we would have incurred, had I compressed it further.

Marc


 
 Return to top of page · Post #: 55 · Written at 10:13:55 PM on 13 December 2009.
Brad's avatar
 Administrator
 Location: Naremburn, NSW
 Member since 15 November 2005
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 Postcount: 7306

There's a slight delay with the edit function. I will have to finish working on it tomorrow night. Still, we've all waited this long, ay.

It's best to get things like this right the first time because it involves the security of the database. Smile


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A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 56 · Written at 10:58:14 PM on 13 December 2009.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5257

Antique Radio Forums will only allow edit if you are logged in, and you can only edit your post.

Marc


 
 Return to top of page · Post #: 57 · Written at 11:32:55 PM on 13 December 2009.
CaptHowie's Gravatar
 Location: Bentleigh East, VIC
 Member since 25 October 2009
 Member #: 568
 Postcount: 39

First off, thanks Brad for sending that through and I will be looking forward to the new functions (the edit was a nessesity...) Smile

Anyway, on to the photo. Thanks Marc for taking the time to look at it. Much appreciated. Some of the points you circled (including the suspected cut) were panorama errors (sorry about those, should have had a better look). Anyway, with all these errors do you recommend that I just re-solder everything? Was there anything wrong with the blue cable from the transformer going to a lone solder lug? Those capacitors up the top that overlap each other are like that in the original Kriesler diagram. Should I just insulate it with heat shrink or something? Did all the resistors look fine?

I am going to replace the power plug, but I wanted to get it actually working first.

As you've mentioned, this is my first restoration so I'm learning along the way, and I'm taking your help as advice, as you also mentioned. I'm grateful to have this help as I wouldn't be able to do it without it.

Thanks again,
Tim.


 
 Return to top of page · Post #: 58 · Written at 10:18:22 AM on 14 December 2009.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5257

The Blue wire is the 200 to 220 V Tapping on the primary.
The Cable is attached to the 240V to 260 V Tapping. All good.

The only way to tell, other than if its cooked, with resistors is to measure them.

One of the problems with photo's is that they are two dimensional. This is why having these things in front of you, can expedite proceedings.

Jaycar has spagheti sleeving, but hid it in with the clamps, in the cattle dog? I would aquire some & put on the wires noted.

At this juncture I don't think soldering is the problem. I am more and more looking at something being shorted. The only thing that looks shorted, ( bearing in mind photo cannot percieve proximity & depth, in the same way two or more eyes can) is the Capacitor on the plate of the 6AQ5, which appears to be going under the copper wire.

That definately needs sleeving. If that is not the short, one needs to look deeper into the components.

Marc


 
 Return to top of page · Post #: 59 · Written at 4:38:30 PM on 3 January 2010.
CaptHowie's Gravatar
 Location: Bentleigh East, VIC
 Member since 25 October 2009
 Member #: 568
 Postcount: 39

I have no idea what is wrong with it. Could it be that the Transformer/Speaker Transformer is just stuffed?

Thanks,
Tim


 
 Return to top of page · Post #: 60 · Written at 10:41:23 PM on 3 January 2010.
Brad's avatar
 Administrator
 Location: Naremburn, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 7306

G'day Tim,

You noted in your first comment that there was smoke coming from the power transformer when you tried powering up the radio. Did you get a chance to replace that yet? If not then that is the first thing to do, even if it takes a while tracking one down. The 11-71 was a fairly popular radio and they can be bought very cheaply. I would recommend getting hold of another set and then combining the two sets to make one good one. IE: Select the best cabinet, best looking chassis, the operational power transformer, etc and go from there.

The next question would be: do you have some basic test gear? You won't get far without a multimeter, digital if possible as their internal resistance is higher, producing a more accurate reading.


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
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