Sony CVM-1850E - UK Vintage Radio Repair and Restoration Discussion Forum

simpsons · 20th Nov 2020, 10:40 am

A bit of a long shot but does anyone have the schematic of the above model. I am particularly interested in the CRT type which I believe is a 470BEB22 and the similarity to the KV1800

I do know that I can buy the schematic for the US version (CVM1750) for $29.

My interest is more than academic as I hope to have one of these beasts in the near future.

Chris

peterpixel · 20th Nov 2020, 11:17 am

Hi,Simpsons,the crt shown in the manual for the CVM-1850UB is a 470FWB22B.I don't know the difference between the two however I do have a manual which I can let you have for £20 including post and packing.Please PM me if interested.Peter.

peterpixel · 20th Nov 2020, 1:50 pm

Hi again,Simpsons,just realised that you are asking for the E suffix,which Ithink was the European model with different sound IF my info was based on the UB ie the British version.Hope my input is still of some benefit.Best regards,Peter.

simpsons · 20th Nov 2020, 3:54 pm

Hi Peter

Thank you so much for the speedy response on the CRT type. Your input has saved me from making a fool of myself.

The Radio Museum spec says: Monitor mit 47cm Bilddiagonale (90°-Ablenkung). Ah, good I thought. Same as my KV1800 which needs a new tube.

The Sony 1820, of which I have one, is a 114 degree CRT.

I did think that the channel change was not right but given the CVM1350 uses the original 13" 330AB22 which is 90 degrees, I had hoped I was on to something!

Although I won't be buying this for the reason given, I/we now know who has a service manual!

Thanks again

Chris

simpsons · 20th Nov 2020, 6:15 pm

I should have explained that the 470FWB22B is also used in the Sony KV1820

Chris

peterpixel · 20th Nov 2020, 8:20 pm

Hi Chris,glad to be of help,just goes to show that it pays off to read the entire message correctly so I can now address you by your correct name.Peter.

simpsons · 21st Nov 2020, 10:05 am

Peter, I have such a bad instant recall for names that even after being introduced, I often default to the name PETER!

As for being called Simpsons "Am I bothered!!"

Thanks again for saving my bacon.

Chris

20th Nov 2020, 10:40 am	#1
simpsons Octode Join Date: Feb 2007 Location: Harrow, London, UK. Posts: 1,493	Sony CVM-1850E A bit of a long shot but does anyone have the schematic of the above model. I am particularly interested in the CRT type which I believe is a 470BEB22 and the similarity to the KV1800 I do know that I can buy the schematic for the US version (CVM1750) for $29. My interest is more than academic as I hope to have one of these beasts in the near future. Chris

20th Nov 2020, 11:17 am	#2
peterpixel Pentode Join Date: Jul 2013 Location: Wilmslow, Cheshire, UK. Posts: 210	Re: Sony cvm1850e Hi,Simpsons,the crt shown in the manual for the CVM-1850UB is a 470FWB22B.I don't know the difference between the two however I do have a manual which I can let you have for £20 including post and packing.Please PM me if interested.Peter.

20th Nov 2020, 1:50 pm	#3
peterpixel Pentode Join Date: Jul 2013 Location: Wilmslow, Cheshire, UK. Posts: 210	Re: Sony cvm1850e Hi again,Simpsons,just realised that you are asking for the E suffix,which Ithink was the European model with different sound IF my info was based on the UB ie the British version.Hope my input is still of some benefit.Best regards,Peter.

20th Nov 2020, 3:54 pm	#4
simpsons Octode Join Date: Feb 2007 Location: Harrow, London, UK. Posts: 1,493	Re: Sony CVM-1850E Hi Peter Thank you so much for the speedy response on the CRT type. Your input has saved me from making a fool of myself. The Radio Museum spec says: Monitor mit 47cm Bilddiagonale (90°-Ablenkung). Ah, good I thought. Same as my KV1800 which needs a new tube. The Sony 1820, of which I have one, is a 114 degree CRT. I did think that the channel change was not right but given the CVM1350 uses the original 13" 330AB22 which is 90 degrees, I had hoped I was on to something! Although I won't be buying this for the reason given, I/we now know who has a service manual! Thanks again Chris

20th Nov 2020, 6:15 pm	#5
simpsons Octode Join Date: Feb 2007 Location: Harrow, London, UK. Posts: 1,493	Re: Sony CVM-1850E I should have explained that the 470FWB22B is also used in the Sony KV1820 Chris

20th Nov 2020, 8:20 pm	#6
peterpixel Pentode Join Date: Jul 2013 Location: Wilmslow, Cheshire, UK. Posts: 210	Re: Sony CVM-1850E Hi Chris,glad to be of help,just goes to show that it pays off to read the entire message correctly so I can now address you by your correct name.Peter.

21st Nov 2020, 10:05 am	#7
simpsons Octode Join Date: Feb 2007 Location: Harrow, London, UK. Posts: 1,493	Re: Sony CVM-1850E Peter, I have such a bad instant recall for names that even after being introduced, I often default to the name PETER! As for being called Simpsons "Am I bothered!!" Thanks again for saving my bacon. Chris