Sanyo VTC 9300 noisy. - Page 2 - UK Vintage Radio Repair and Restoration Discussion Forum

Mooly · 11th Mar 2017, 7:08 pm

Poor rewind could be due to the upper drum casting becoming highly polished (wear). This was a common problem across many Beta machines.

I used to refinish these (not this model though) very very successfully by using car valve grinding paste. A few gentle wipes around the whole casting with a soft cotton cloth and some paste removes the shine and imparts a slightly 'honed' finish. They looked as good as a new part and performed just as well.

dj_fivos_sak · 12th Mar 2017, 6:07 pm

Mooly is right. I have two VTC 9350's. One of them had poor rewind due to a sticky head drum. Watch this video at 31:23

https://www.youtube.com/watch?v=sxRVnr2mSsg&t=478s

This also does a pretty good job:

http://www.ebay.com/itm/MG-Chemicals...0AAOxyoahSVZRR

HamishBoxer · 12th Mar 2017, 6:49 pm

I polish with Duraglit

Veeraraj · 12th Mar 2017, 7:04 pm

Hi guys, thank you for your response.

Dj Fivos - I looked at the YouTube video and noticed that the guy used sandpaper to clean the upper drum. I may try that because my upper head drum looks very dirty. Also read the boiling tyres but I don't know how to take them out.

With the tyres, I don't know how to take the tyre out. I tried but badly struggled. I'll try the rubber rane to see if that will solve the rewind issue.

Mooly - many thanks. I'll try the sandpaper tip and see where that will take me.

Hamishboxer - I'll have a look at that now. Many thankd

steve1010uk · 12th Mar 2017, 7:25 pm

The thought of going anywhere near the head drum with sandpaper frightens me to death,

I think Mooly's paste or Hamishes Duraglit would be a lot safer !

Steve

Veeraraj · 14th Mar 2017, 6:48 pm

Thank you steve1010uk for your comments. After reading your comments I've decided not to try the sandpaper trick and try the Abro paste, recommended by Mooly. The paste cost £6 and just paid for it. Do I use this paste on the idler tyre or just the upper head drum?

Mooly · 15th Mar 2017, 9:07 am

Just the drum. If the paste is anything like the stuff I used (and I just posted that as an example but it does look the same type of package as mine) then it will be what seems to be super sharp metal fillings suspended in oil. So you have to polish the drum with it off the machine and then thoroughly wash and degrease the drum afterwards.

The finish you are aiming for is a fine 'matt' appearance. Perhaps do some tests on a piece of aluminium first to get the feel of it.

HamishBoxer · 15th Mar 2017, 9:37 am

Sandpaper?Goodbye head drum!

Veeraraj · 16th Mar 2017, 12:26 pm

Hi Mooly, so once I've polished the head drum with the polish I have to use water to remove the polish and then degrease the drum. Is this correct? What do I degrease this with? Vegetable oil?

Mooly · 16th Mar 2017, 7:36 pm

It is the upper casting that you polish, nothing else. You can clean it by a variety of methods. Hot water and washing up liquid and really soft paintbrush should work. You have to get every trace of the oil and abrasive material out of every nook and cranny.

It has to both look and be perfect. It should stand visual comparison with a brand new part when you have finished.

If the drum has any removable guides (such as in this picture) then unscrew them and take them off.

Veeraraj · 16th Mar 2017, 8:24 pm

Ok, once I've applied the polish on the upper head drum I'd have to remove the polish with hot water and washing up liquid. Is this correct?

I've just received another belt kit with the tyres for this player. As previously stated, I don't know how to take off the old tyre off.

Don't know how to remove the head drum as I've never done this in my life.

Veeraraj · 16th Mar 2017, 8:28 pm

I've tried adding picture of the head drum. I haven't done this before so I'm giving this a try.

HamishBoxer · 16th Mar 2017, 8:53 pm

Just for the record ,I have never had a sticky head drum as it is the lower drum that causes drag and what I have used Duraglit on.

Veeraraj · 16th Mar 2017, 9:22 pm

Ok, I'm hoping to resolve the problem this weekend as I should be receiving the Arbo paste, as recommended by Mooly. I'm a little bit scared due to serious lack of experience. I only know how to change belts and clean the heads.

I posted pictures of how the head looks at the moment. Upper drum looks pretty dirty.

Veeraraj · 16th Mar 2017, 9:25 pm

Can I use the paste on the lower head as well? I know it's mainly for the upper head drum, as mooly explained earlier

HamishBoxer · 16th Mar 2017, 10:59 pm

My point entirely.Yes.

Sanbeta · 17th Mar 2017, 3:15 am

Doing this is not for the faint hearted.I've seen many calamaties sadly by those attempting to improve things but making things worse.
Anyone working around the fragile video head area be warned.

.

Mooly · 17th Mar 2017, 9:00 am

The upper casting will be easy to remove, its either screwed on from above or secured with an Allen key at the back (its decades since I last saw one of these).

Be careful to remove only the correct screws. Look at the picture I posted. DO NOT remove the screws securing the top bracket to the casting, remove only the ones securing the casting to the lower drum section. Any plastic guides on the other side of the casting should be unscrewed and removed for cleaning.

Veeraraj · 19th Mar 2017, 12:34 am

Hi guys, I'm continuing to struggle with the rewind issue. I ordered the Arno paste but the seller gave me spray. I sprayed a tiny drop on my cloth and rubbed onto the head. The spray left Black marks on the drum but managed to get rid of most of the marks. Thankfully, the head was not damaged as all the tapes I tested provided a clear picture.

I tried to roughen up the rewind idler with a nail cutter file. Unfortunately this didn't work.

I made two videos for everyone to see. I bought a new rewind idler tyre but have no idea how to replace the tyre.

https://youtu.be/G9A2pp4sDyQ

https://youtu.be/Z0EFURfBlK0

The second link maybe more helpful to find out what's wrong with the rewind.

dj_fivos_sak · 19th Mar 2017, 3:07 am

Here are the instructions on how to remove the rewind idler. You don't really need to remove the supply reel table though.

Link for the full service manual:
http://freeservicemanuals.info/en/se...anyo/VTC9300P/

Instructions are on page 49.

Fivos

11th Mar 2017, 7:08 pm	#21
Mooly Octode Join Date: May 2011 Location: Lancashire, UK. Posts: 1,351	Re: Sanyo VTC 9300 noisy. Poor rewind could be due to the upper drum casting becoming highly polished (wear). This was a common problem across many Beta machines. I used to refinish these (not this model though) very very successfully by using car valve grinding paste. A few gentle wipes around the whole casting with a soft cotton cloth and some paste removes the shine and imparts a slightly 'honed' finish. They looked as good as a new part and performed just as well. Attached Thumbnails

12th Mar 2017, 6:07 pm	#22
dj_fivos_sak Heptode Join Date: Mar 2015 Location: Lefkada, Greece Posts: 969	Re: Sanyo VTC 9300 noisy. Mooly is right. I have two VTC 9350's. One of them had poor rewind due to a sticky head drum. Watch this video at 31:23 https://www.youtube.com/watch?v=sxRVnr2mSsg&t=478s This also does a pretty good job: http://www.ebay.com/itm/MG-Chemicals...0AAOxyoahSVZRR Last edited by dj_fivos_sak; 12th Mar 2017 at 6:30 pm.

12th Mar 2017, 6:49 pm	#23
HamishBoxer Dekatron Join Date: Aug 2007 Location: W.Butterwick, near Doncaster UK. Posts: 8,935	Re: Sanyo VTC 9300 noisy. I polish with Duraglit __________________ G8JET BVWS Archivist and Member V.M.A.R.S

12th Mar 2017, 7:04 pm	#24
Veeraraj Retired Dormant Member Join Date: Mar 2017 Location: London, UK. Posts: 24	Re: Sanyo VTC 9300 noisy. Hi guys, thank you for your response. Dj Fivos - I looked at the YouTube video and noticed that the guy used sandpaper to clean the upper drum. I may try that because my upper head drum looks very dirty. Also read the boiling tyres but I don't know how to take them out. With the tyres, I don't know how to take the tyre out. I tried but badly struggled. I'll try the rubber rane to see if that will solve the rewind issue. Mooly - many thanks. I'll try the sandpaper tip and see where that will take me. Hamishboxer - I'll have a look at that now. Many thankd

12th Mar 2017, 7:25 pm	#25
steve1010uk Pentode Join Date: Nov 2006 Location: East Yorkshire, UK. Posts: 131	Re: Sanyo VTC 9300 noisy. The thought of going anywhere near the head drum with sandpaper frightens me to death, I think Mooly's paste or Hamishes Duraglit would be a lot safer ! Steve

14th Mar 2017, 6:48 pm	#26
Veeraraj Retired Dormant Member Join Date: Mar 2017 Location: London, UK. Posts: 24	Re: Sanyo VTC 9300 noisy. Thank you steve1010uk for your comments. After reading your comments I've decided not to try the sandpaper trick and try the Abro paste, recommended by Mooly. The paste cost £6 and just paid for it. Do I use this paste on the idler tyre or just the upper head drum?

15th Mar 2017, 9:07 am	#27
Mooly Octode Join Date: May 2011 Location: Lancashire, UK. Posts: 1,351	Re: Sanyo VTC 9300 noisy. Just the drum. If the paste is anything like the stuff I used (and I just posted that as an example but it does look the same type of package as mine) then it will be what seems to be super sharp metal fillings suspended in oil. So you have to polish the drum with it off the machine and then thoroughly wash and degrease the drum afterwards. The finish you are aiming for is a fine 'matt' appearance. Perhaps do some tests on a piece of aluminium first to get the feel of it.

15th Mar 2017, 9:37 am	#28
HamishBoxer Dekatron Join Date: Aug 2007 Location: W.Butterwick, near Doncaster UK. Posts: 8,935	Re: Sanyo VTC 9300 noisy. Sandpaper?Goodbye head drum! __________________ G8JET BVWS Archivist and Member V.M.A.R.S

16th Mar 2017, 12:26 pm	#29
Veeraraj Retired Dormant Member Join Date: Mar 2017 Location: London, UK. Posts: 24	Re: Sanyo VTC 9300 noisy. Hi Mooly, so once I've polished the head drum with the polish I have to use water to remove the polish and then degrease the drum. Is this correct? What do I degrease this with? Vegetable oil?

16th Mar 2017, 7:36 pm	#30
Mooly Octode Join Date: May 2011 Location: Lancashire, UK. Posts: 1,351	Re: Sanyo VTC 9300 noisy. It is the upper casting that you polish, nothing else. You can clean it by a variety of methods. Hot water and washing up liquid and really soft paintbrush should work. You have to get every trace of the oil and abrasive material out of every nook and cranny. It has to both look and be perfect. It should stand visual comparison with a brand new part when you have finished. If the drum has any removable guides (such as in this picture) then unscrew them and take them off. Attached Thumbnails

16th Mar 2017, 8:24 pm	#31
Veeraraj Retired Dormant Member Join Date: Mar 2017 Location: London, UK. Posts: 24	Re: Sanyo VTC 9300 noisy. Ok, once I've applied the polish on the upper head drum I'd have to remove the polish with hot water and washing up liquid. Is this correct? I've just received another belt kit with the tyres for this player. As previously stated, I don't know how to take off the old tyre off. Don't know how to remove the head drum as I've never done this in my life.

16th Mar 2017, 8:28 pm	#32
Veeraraj Retired Dormant Member Join Date: Mar 2017 Location: London, UK. Posts: 24	Re: Sanyo VTC 9300 noisy. I've tried adding picture of the head drum. I haven't done this before so I'm giving this a try. Attached Thumbnails

16th Mar 2017, 8:53 pm	#33
HamishBoxer Dekatron Join Date: Aug 2007 Location: W.Butterwick, near Doncaster UK. Posts: 8,935	Re: Sanyo VTC 9300 noisy. Just for the record ,I have never had a sticky head drum as it is the lower drum that causes drag and what I have used Duraglit on. __________________ G8JET BVWS Archivist and Member V.M.A.R.S

16th Mar 2017, 9:22 pm	#34
Veeraraj Retired Dormant Member Join Date: Mar 2017 Location: London, UK. Posts: 24	Re: Sanyo VTC 9300 noisy. Ok, I'm hoping to resolve the problem this weekend as I should be receiving the Arbo paste, as recommended by Mooly. I'm a little bit scared due to serious lack of experience. I only know how to change belts and clean the heads. I posted pictures of how the head looks at the moment. Upper drum looks pretty dirty.

16th Mar 2017, 9:25 pm	#35
Veeraraj Retired Dormant Member Join Date: Mar 2017 Location: London, UK. Posts: 24	Re: Sanyo VTC 9300 noisy. Can I use the paste on the lower head as well? I know it's mainly for the upper head drum, as mooly explained earlier

16th Mar 2017, 10:59 pm	#36
HamishBoxer Dekatron Join Date: Aug 2007 Location: W.Butterwick, near Doncaster UK. Posts: 8,935	Re: Sanyo VTC 9300 noisy. My point entirely.Yes. __________________ G8JET BVWS Archivist and Member V.M.A.R.S

17th Mar 2017, 3:15 am	#37
Sanbeta Hexode Join Date: Feb 2012 Location: Lowestoft, Suffolk, UK. Posts: 256	Re: Sanyo VTC 9300 noisy. Doing this is not for the faint hearted.I've seen many calamaties sadly by those attempting to improve things but making things worse. Anyone working around the fragile video head area be warned. .

17th Mar 2017, 9:00 am	#38
Mooly Octode Join Date: May 2011 Location: Lancashire, UK. Posts: 1,351	Re: Sanyo VTC 9300 noisy. The upper casting will be easy to remove, its either screwed on from above or secured with an Allen key at the back (its decades since I last saw one of these). Be careful to remove only the correct screws. Look at the picture I posted. DO NOT remove the screws securing the top bracket to the casting, remove only the ones securing the casting to the lower drum section. Any plastic guides on the other side of the casting should be unscrewed and removed for cleaning.

19th Mar 2017, 12:34 am	#39
Veeraraj Retired Dormant Member Join Date: Mar 2017 Location: London, UK. Posts: 24	Re: Sanyo VTC 9300 noisy. Hi guys, I'm continuing to struggle with the rewind issue. I ordered the Arno paste but the seller gave me spray. I sprayed a tiny drop on my cloth and rubbed onto the head. The spray left Black marks on the drum but managed to get rid of most of the marks. Thankfully, the head was not damaged as all the tapes I tested provided a clear picture. I tried to roughen up the rewind idler with a nail cutter file. Unfortunately this didn't work. I made two videos for everyone to see. I bought a new rewind idler tyre but have no idea how to replace the tyre. https://youtu.be/G9A2pp4sDyQ https://youtu.be/Z0EFURfBlK0 The second link maybe more helpful to find out what's wrong with the rewind.

19th Mar 2017, 3:07 am	#40
dj_fivos_sak Heptode Join Date: Mar 2015 Location: Lefkada, Greece Posts: 969	Re: Sanyo VTC 9300 noisy. Here are the instructions on how to remove the rewind idler. You don't really need to remove the supply reel table though. Link for the full service manual: http://freeservicemanuals.info/en/se...anyo/VTC9300P/ Instructions are on page 49. Fivos Attached Thumbnails Last edited by dj_fivos_sak; 19th Mar 2017 at 3:13 am.