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Old 3rd Jul 2022, 4:06 pm   #1
Bigears
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Default EAR De-Luxe Record Player

Hi Guys
I have a Electric Audio Reproducers De-Luxe 1962 Record Player.
When I fired it up this component " Sparked and Smoked " Please view picture, any suggestion and help is welcome
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Old 3rd Jul 2022, 4:34 pm   #2
Radio Wrangler
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Default Re: EAR De-Luxe Record Player

The component mounted right at the right side? below the metal rectifier?

It isn't really in the photograph so we can't see what it is. Best guess is that it looks like another metal rectifier (as if one of them isn't trouble enough)

David
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Old 3rd Jul 2022, 5:21 pm   #3
Ed_Dinning
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Default Re: EAR De-Luxe Record Player

Hi, running up with a lamp limiter may help identify which parts are actually faulty without the pyrotechnic displays.
It should be quite easy to fix

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Old 3rd Jul 2022, 6:02 pm   #4
buggies
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Default Re: EAR De-Luxe Record Player

It looks to me like the large resistor has been overcooked rather than the rectifier.
And maybe the rectifier would have smelt stronger?
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Old 3rd Jul 2022, 6:14 pm   #5
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Default Re: EAR De-Luxe Record Player

If it's of any use, in another thread for an E.A.R. De-luxe record player I reverse engineered a schematic as best I could at that time from photo's that the OP posted in that thread, it gives component values where known, note that although there were two selenium rectifiers as shown in those photo's I lumped them together and showed them as MR1 in that reverse engineered schematic.

Any errors then guilty as charged.

The reverse engineered schematic referred to above is attached.

Link to that particular thread is here:

https://www.vintage-radio.net/forum/...=152663&page=3

Lawrence.
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Old 3rd Jul 2022, 7:32 pm   #6
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Default Re: EAR De-Luxe Record Player

Yes the large resistor certainly looks well cooked. From photo in link above looks like it is the 100 Ohm green wire wound resistor.

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Old 3rd Jul 2022, 7:39 pm   #7
Bigears
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Default Re: EAR De-Luxe Record Player

Quote:
Originally Posted by buggies View Post
It looks to me like the large resistor has been overcooked rather than the rectifier.
And maybe the rectifier would have smelt stronger?
I saw the sparks and smoke coming from that Rectifier in the picture.

Last edited by Station X; 3rd Jul 2022 at 7:41 pm. Reason: Quote fixed.
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Old 3rd Jul 2022, 7:39 pm   #8
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Default Re: EAR De-Luxe Record Player

Resistors don't cook unless they carry excess current due to a fault elsewhere. I suggest the OP gets his meter out and tests all resistors and the rectifier before "firing up" again.
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Old 3rd Jul 2022, 7:48 pm   #9
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Default Re: EAR De-Luxe Record Player

How long since it was last used? If not recently, have the main electrolytics been reformed and/or tested before powering up?

Metal rectifier failure through old age is common but not inevitable and does not typically result in fireworks. They, like resistors, are easily cooked by problems downstream.
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Old 4th Jul 2022, 8:06 am   #10
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Default Re: EAR De-Luxe Record Player

So what is the component to the right of the metal rectifier, another metal rectifier ?
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Old 4th Jul 2022, 9:03 am   #11
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Default Re: EAR De-Luxe Record Player

From photos and associated comments in Lawrence's linked Thread it does appear to be.

In fact it is the one that the arrow in Post # 1 of this Thread appears to be pointing to, i.e. the one that sparked/smoked.

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Old 4th Jul 2022, 9:07 am   #12
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Default Re: EAR De-Luxe Record Player

For some reason these players used two rectifiers in a parallel as seen in the thread linked to by Lawrence above.

In view of the sparking I'd be inclined to replace both with a single 1N4007 diode and a series resistor.

After checking for problems downstream of course!
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Old 4th Jul 2022, 6:58 pm   #13
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Default Re: EAR De-Luxe Record Player

Hi Guys
Here are some more pictures of the EAR De-Luxe Record Player, George is right that resistor looks well cooked, but it was like that before I fired it up.
also I've up- loaded a picture of the same model from this site and if you look at the one of mine to compare it would seem that there is a missing component, may be a Cap just below the speaker , it would seem I have my work cut out, however it will keep me busy, Is it possible any one could draw up a list of the things that I need to do, and going by the pictures with component I need to replace.
Thank you all for your help Regards Ken
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Old 4th Jul 2022, 7:02 pm   #14
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Default Re: EAR De-Luxe Record Player

More pictures EAR De-Luxe Record Player
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Old 4th Jul 2022, 7:41 pm   #15
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Default Re: EAR De-Luxe Record Player

You need to replace that Plessey yellow/red cap. Remove the 2 metal contact-cooled rectifiers and the burned resistor. Then as suggested in Post #12, add a diode and a 150 ohm 10 watt resistor. This record player is capable of giving 6-8 watts of extremely good sound - especially through that large EMI 9" x 5" speaker. However, do bear in mind that it will run quite hot due to its design.
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Old 4th Jul 2022, 7:44 pm   #16
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Default Re: EAR De-Luxe Record Player

I would imagine that cap is there because one of the sections in the metal can needed replacing

In other words, yours doesn't have anything missing.
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Old 4th Jul 2022, 7:49 pm   #17
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Default Re: EAR De-Luxe Record Player

I'm surprised that EAR used two rectifiers in parallel. I assume a single one could not supply the desired current. The problem comes when one of them fails and the load is placed on the remaining one.
The 'cooked' resistor looks like a higher wattage carbon item. Other makers frequently used them as a surge limiter (usually around 100 ohms). They often have the paint flaking off them, but they seem to soldier on.
I agree with the idea of a single 1N4007 and wirewound surge limiter resistor.

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Old 4th Jul 2022, 7:51 pm   #18
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Default Re: EAR De-Luxe Record Player

Quote:
Originally Posted by Bigears View Post
Hi Guys
I've up- loaded a picture of the same model from this site and if you look at the one of mine to compare it would seem that there is a missing component, may be a Cap just below the speaker
Do you mean photo 5 in Post 13 where the capacitor appears not to be there ?

From Lawrence's reverse engineered schematic it appears to be C7, yours of course has the capacitor so no issue with that.

David
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Old 5th Jul 2022, 10:01 am   #19
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Default Re: EAR De-Luxe Record Player

Thanks all regards ken
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Old 5th Jul 2022, 2:39 pm   #20
Bigears
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Quote:
Originally Posted by Edward Huggins View Post
You need to replace that Plessey yellow/red cap. Remove the 2 metal contact-cooled rectifiers and the burned resistor. Then as suggested in Post #12, add a diode and a 150 ohm 10 watt resistor. This record player is capable of giving 6-8 watts of extremely good sound - especially through that large EMI 9" x 5" speaker. However, do bear in mind that it will run quite hot due to its design.
Edward the Yellow/Red cap is red at one end and Black at the other I cant see any markings to state which is Negative or positive
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