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Rich
Thursday 19th September 2019
7:54 pm U.K.

It definitely can't record PAL signals, hence why I use a cheap and cheerful PAL to NTSC adapter. I've got a large quantity of NTSC pre recorded tapes and the performance of the vcr is ok, superBeta isn't as good as on a PAL machine. The 950 is vastly superior. I also have an SL-HFT7 superBeta theatre ntsc vcr which is a much better performing machine compared to the other one.

Noel Higgins
Friday 20th September 2019
7:11 am U.K.

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Neil,

Regarding your SLHF950 picture dropping out issue and loss of tape counter/time run function. You are basically not getting the track pulse due to tape misalignment with the audio head.

Preview/review mode gives you picture despite there being no tracking pulse.

Gabriel is probably right with his capstan roller comment. I doubt you can still get new spares these days.

I have found they can be restored as follows which is quoted on my betaheaven.com website.

The beta machine capstan rollers can become worn, dirty and uneven over time and with use. They are difficult to source and expensive when you do find them.

For a demonstration on how to refurbish a capstan roller using a grinding wheel in a Dremel super tool (or similar) see the video at https://www.youtube.com/watch?v=adYr2B0z--c

This will work unless the rubber on the capstan roller has cracked or perished or the support bearings have failed."

regards Noel

K Lambert
Friday 20th September 2019
7:08 pm U.K.

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Neil:

Regarding your issues with your Sony 950 Superbeta.

Can I also ask that you check the following...........For no playback picture with the tape counter stuck, check for CTL (control track) pulses at Pin 15 of IC302 on the SS50 (Servo) board. If these are missing, check under the SS50 board for a modification diode added between D311 Cathode and Q305 Collector (REG 5V) which may have gone leaky.

I have had one of these machines with EXACTLY that issue and feel that could be what's wrong with yours.

(that issue is listed in the technical area page for this model on this site).

As for pinch rollers 'I've seen many that are shiny with tape oxide but on the Sony's the usual problem is the rubber goes hard. If that is the case then replacement is the only viable option. If you get flex by pressing your thumbnail into the rubber then it should be OK.

.....................Kevin

Noel Higgins
Thursday 26th September 2019
11:06 pm U.K.

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Hello fellow Beta Geeks,

The load gear breaking on Sony front load machines such as SLC30, 34, 35 & SLF30, 60 mono machines and SLHF100 and 150 machine is now very common.

The black gears of the shaft shrink over time, split and eventually spin on the shaft and or break apart.

This results in tapes jammed in machines, at which stage many machines get packed away or get a free trip to landfill.

I developed the fix shown at At http://www.palsite.com/100tech.html

The gears have 10 teeth and are 6mm diameter and 7mm in length. The steel drive shaft has a nurled end roughly 2.5mm diameter.

THERE APPEARS TO BE A MUCH EASIER SOLUTION

I now see that white plastic gears (for RC toy cars) are available quite cheaply on ebay that have a 2.5mm hole and 5.7mm in diameter and 4.7mm in length.

In practice diameter is sufficient and the reduced length does not really matter, just use super glue (or other suitable glue) to glue them to the shaft and protrude the shaft 1 mm or so past the end.

See https://www.ebay.com.au/itm/50PCS-10-Teeth-2-5mm-Hole-Diameter-Plastic-Gear-Wheel-for-RC-Toy-Car/332284917749?_trkparms=aid%3D555018%26algo%3DPL.SIM%26ao%3D1%26asc%3D60046%26meid%3D38598f684b5c4e7b9fcb0c7eb6483fa0%26pid%3D100005%26rk%3D6%26rkt%3D12%26sd%3D391851978473%26itm%3D332284917749%26pmt%3D1%26noa%3D0%26pg%3D2047675&_trksid=p2047675.c100005.m1851

If you don't need 50 then look for a smaller quantity but the price does not seem to change much.

Happy repairs!

regards Noel Higgins (Betaheaven.com)

Rich
Friday 4th October 2019
4:00 pm U.K.

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Hello all,

I have two ntsc superBeta hifi vcrs that are capable of playing back B1 speed recordings. I don't have any B1 speed recordings to see what the quality is like though. Has anyone in the UK facilities to make a B1 speed superBeta (hi-band) hifi recording for me to test out my vcrs full potential please? I can supply a brand new cassette and pay for your time etc....

Cheers

Rich.

Robert Pennington
Monday 11th November 2019
8:37 pm U.K.

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Hi,

I was wondering if someone could help me price up an old Betamax tape, which is in excellent condition:

Marvels ‘The Mighty Thor’ (1982)

I can’t find a single copy online - any help is greatly appreciated!

K Lambert
Thursday 14th November 2019
11:35 am U.K.

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Hi Robert:

If you go to this site http://www.pre-cert.co.uk/forum/index.php I'm sure someone there will be able to help.

Good luck.....................Kevin

nas khan
Wednesday 20th November 2019
12:35 am U.K.

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nas khan
Wednesday 20th November 2019
12:37 am U.K.

[email protected]

seeking this part can you assist?

BETAMAX PINCH ROLLER...​Manufacturer Sony Replacement Parts Part Number 3-669-438-11 Description Guide Roller #9

for sony betamax video cassette recorder model #sl 2305.

thanks!

K Lambert
Wednesday 20th November 2019
12:00 pm U.K.

Nas Khan.

E-bay will be your only hope with those as many parts are out of production now and have been for some time.

.Kevin

DAVID BRUNNER
Tuesday 26th November 2019
11:05 pm U.K.

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This tape is a normal Betamax?

http://www.mediafire.com/view/nnt2xxokekvsn7f/Tape.jpg/file

Marco
Thursday 28th November 2019
7:13 pm U.K.

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Yes David, looks like a TDK one, they used to make this "large window" model!

Hi everyone!

I'm having some trouble with my SL-C40 and i don't know what to check!

From time to time, picture on "play" looks wiggly from left to right at regular intervals. Picture crystal clear and steady in pause and ff/rew modes...

The wiggling comes with a slight rhytmic whirry sound from the motor I think...what can it be?

Cheers

Marco from Italy

Rich
Monday 2nd December 2019
10:37 am U.K.

David,

That looks like a Sony made cassette. I'm sure I have some 'Extra High Grade' (or whatever they call them), it looks a bit like a Pro-X tape for the SL-HF950.

Marco,

Your problem sounds like it could be a worn/misshapen pinch roller. The reason you're getting a clear picture in pause mode is that the pinch roller doesn't turn when pause is pressed. Take a look at it and if it's shiny and hard then you'll ideally need a replacement. Another forum member here, Noel, has recorded a short video on how to restore a hard/shiny pinch roller, look in the repair section of this website, I think the video is there somewhere.

Let us know the outcome of it!

Cheers

Rich.

K lambert
Monday 2nd December 2019
4:41 pm U.K.

Marco:

It sounds like you either have a slightly too high back tension setting. The back tension band needs a one direction smoothing ,or The tape spools are tight.

This was common on light grey Sony tape shells from around 1985.The spool colour was a pale yellow.

The wiggle ,distortion you mention is the tape vibrating as it goes over the head drum down to one of the for mentioned reasons above. This would also explain why everything is fine during search and pause modes.

..Kevin

Marco
Monday 2nd December 2019
4:49 pm U.K.

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Thank you both K Lambert and Rich!

I'm going to check both things!

I've already watched the pinch roller restoration tutorial but never been brave enough to do that, only cleaned it with a q-tip and alcohol, but it's time to try and restore it properly!

How can I slightly adjust the tape back tension?

Thanks a lot!

Marco

Marco
Thursday 5th December 2019
11:05 pm U.K.

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Hi everybody!

I tried to follow your advices and, clumsy me, I damaged something!

First of all I tried checking the pinch roller...a bit shiny (shows a more polished band, where the tape slides), but not so hard...took it off, washed it with washing up fluid, I haven't got a Dremel for refurbish its surface, mounted it back.

Then, cleaning the rest of the tape path, I found a bit of a little metal "pole" (don't know its name) hanging from a black plastic arm hinged from below to somewhere near feeding spool motor with some springs holding it. That assembly looked like wrongly positioned because in play it wrinkled a bit the tape on the top, so i tried to lower the little pole and give more room for the tape on top, and that's when it broke, plastic holding it was maybe cooked and crumbled with a little touch. I'm with the black plastic arm alone now, since the metal part fell down and I can't find it... Tape plays better than before now, so I think it did actually cause some trouble, but it seems to have some tracking problems...sometimes, especially in play right after some search, picture spins up-down a couple of times before tracking properly. I tried to replace the metallic part with a centimeter and half from a thick paperclip, it seems to hold in place firmly but picture isn't at its best, and I'm afraid it can cause some static buildup as it's not the correct material...

What is that plastic arm there for? What damage can it do running with just plastic and no metal needle? How can I restore its functions? These and many other questions in the next episode of "damaging a Betamax when trying to repair it"!

Cheers

Marco from Italy

K lambert
Sunday 8th December 2019
1:13 am U.K.

Marco:

THAT was the back tension arm you've now damaged.

You really need the Sony SLC003 front and back tape tension cassette to check things properly.

There is a felt band that is used for the back tesnon.

You can more a tiny spring at the top of the back arm but I always do it with the felt band. Some models you can adjust this through and access hole, so preventing the reel deck from being removed to do this. Like I said though that tape is essential.

..............Kevin

Marco
Monday 9th December 2019
9:55 pm U.K.

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Hi Kevin!

I somehow managed to repair the back tension arm! I found and replaced the small metal piece I lost, then I moved the arm spring. As you said tension was too high maybe, so I tried to move the spring to one tooth more towards the feed spool (the last one) and now picture is very very stable!

There is still a minor issue with my Beta...after a (too) deep head cleaning with iso alcohol and chamois tracking has become hard to adjust properly.

It may be unrelated, but before the cleaning, the middle position was good for almost every tape, now I have to adjust it for every tape and it's very hard to get a perfect result. In the minimum and maximum positions I even get scrambled colours now, instead of just streaks. Is there something that can be adjusted?

Marco

K Lambert
Wednesday 11th December 2019
5:58 pm U.K.

Marco:

Well done on the former but it does sound like you 'may' have damage the heads when cleaning them.

I HOPE I'm wrong.

They may be blocked but I wouldn't try cleaning them anymore just in case. I always find using a known good tape and letting it play and reverse searching at intervals cleans them well too.

It also takes away the risk of damage.

.......Kevin

Rich
Thursday 12th December 2019
4:54 pm U.K.

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Hi all,

Has anyone got a working DC-DC converter for the C9 for sale please? I've seen a newly designed version on Ebay but the seller wants nearly £90 for it!!! I love my C9, but not that much......

I've not got the tools to open my defective one. Apparently I need A LOT of heat to get the solder to melt so the metal cans can come apart.

Thanks in advance

Rich.

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