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 HMV D33A radio/record player
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 Return to top of page · Post #: 1 · Written at 4:35:52 PM on 8 June 2025.
Scotty's Gravatar
 Scotty
 Location: Melbourne, VIC
 Member since 26 December 2010
 Member #: 794
 Postcount: 401

Hi all,
I have an HMV D33A table model radio record player in my workshop. Would anyone have a schematic for the receiver, plus the turntable is 78rpm turntable which has a couple of large 11MF caps that I assume are for the motor.
Not sure if anyone has come across these before, but I’d appreciate any info.
Cheers
Scott


 
 Return to top of page · Post #: 2 · Written at 5:45:04 PM on 8 June 2025.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6935

Schematic is on Radiomuseum. Non-members can download a limited number of these.

Double click on the schematic for instructions:

https://www.radiomuseum.org/r/hismasters_d33a.html
 
 Return to top of page · Post #: 3 · Written at 6:29:28 PM on 8 June 2025.
Scotty's Gravatar
 Scotty
 Location: Melbourne, VIC
 Member since 26 December 2010
 Member #: 794
 Postcount: 401

Thanks GTC, yes I found it after posting here. The turntable is still a mystery
 
 Return to top of page · Post #: 4 · Written at 11:47:31 PM on 8 June 2025.
MonochromeTV's avatar
 MonochromeTV
 Location: Melbourne, VIC
 Member since 20 September 2011
 Member #: 1009
 Postcount: 1262

The schematic at Radiomuseum is a two page AORSM abridged version.

The HMV D33A service manual is ten pages.

Looks like another pdf for Kev!!
 
 Return to top of page · Post #: 5 · Written at 7:12:26 AM on 9 June 2025.
Scotty's Gravatar
 Scotty
 Location: Melbourne, VIC
 Member since 26 December 2010
 Member #: 794
 Postcount: 401

Thanks
The turntable as I have mentioned above is something I’ll need advice on. It’s a single speed 78rpm with a small motor and 2 large capacitors rated at 11mfd - no indication if they are polarised or not and no voltage rating. They are around the size of a D cell battery and are mounted in a Bakelite holder.
Cheers
Scott
 
 Return to top of page · Post #: 6 · Written at 8:55:25 AM on 9 June 2025.
Ian Robertson's Gravatar
 Ian Robertson
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 2689

Do you want to consider replacing the 78-only TT (with its rock-crusher pickup and 11 mfd caps containing polychlorinated biphenyls which are highly carcinogenic) with something newer?

I have a few spare TTs, maybe one of them would fit. Yours for free, but will probably need the usual lube job and a new pickup cart.
 
 Return to top of page · Post #: 7 · Written at 10:40:15 AM on 9 June 2025.
Scotty's Gravatar
 Scotty
 Location: Melbourne, VIC
 Member since 26 December 2010
 Member #: 794
 Postcount: 401

Hi Ian
Have thought about replacing it yes, given the size of the record player I’m not sure what would fit. Alternatively, I could just restore it the way it is for historical purposes.
Maybe better to email me directly as I’m still curious as to how this turntable actually works.
Cheers
Scott
scott.sharrison.com.au
 
 Return to top of page · Post #: 8 · Written at 12:14:52 PM on 16 June 2025.
MonochromeTV's avatar
 MonochromeTV
 Location: Melbourne, VIC
 Member since 20 September 2011
 Member #: 1009
 Postcount: 1262

Service manual now available:

https://www.kevinchant.com/uploads/7/1/0/8/7108231/hmv_d33a.pdf
 
 Return to top of page · Post #: 9 · Written at 4:55:41 PM on 16 June 2025.
Scotty's Gravatar
 Scotty
 Location: Melbourne, VIC
 Member since 26 December 2010
 Member #: 794
 Postcount: 401

Much appreciated
Thanks
 
 Return to top of page · Post #: 10 · Written at 4:33:23 PM on 3 November 2025.
Scotty's Gravatar
 Scotty
 Location: Melbourne, VIC
 Member since 26 December 2010
 Member #: 794
 Postcount: 401

Hi all
I have had a further look at this HMV D33A turntable. I have managed to get it to run on 110V (unsung a step down and connecting it to the 100-120v tabs on the motor. The 220-240v connections are dead. I gather the caps have something to do with all this. I’d like to get it working properly so any advice is appreciated.
I uploaded pics back on September 11, 2017 that show the motor and caps etc

https://vintage-radio.com.au/default.asp?f=2&th=819&offset=1


Thx Scott
 
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