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Sunday 26th March 2017

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Frandid
Wednesday 6th July 2016
5:25 pm U.K.

duckstar@free.fr

Gabriel, I have just entirely disassembled the loading system of my HF950 and I found what could be the reason for its erratic behaviour : Inside the switch mode the 6 contact blade that works against the little printed circuit has 2 of its 3 plastic fixations broken and is moving so it is never in the same position. Tell me if what I intend to do is a good solution : I will first stick it with superglue in the right position, then put some epoxy on the 3 plastic fixations to consolidate the repair. What d'you think about it ? Regards.

Andy
Tuesday 5th July 2016
11:26 pm U.K.

benham3160@gmail.com

Cheers again Kev,

Yes it was only a drop, I work with a lot of plastic geared mechanical machines for a living so I know how irritating it is, I've been very conservative. Just want to grab a video from somewhere now and get it moved on, I'm having to borrow TV to test it so that shows you how in to this stuff I am! The picture circuit stuff I'm not so phased by as I've got an electronics bench set up with my 'scopes and meter so that side of it I'm a bit (just a bit!) more confident with. Irritating fault is that the 'lug' is broken on the tape door so the lower portion flaps about, I'll try and find a way to fix that tomorrow. I've got a huge stock of caps and components on hand so if anything misbehaves in testing hopefully I can resolve it. The PSU is all I can test at the moment and that's strong, infact the caps' look in rude health for a nearly forty-year old machine.

I was more worried about the mechanics of it, now understanding how the pendulum works it's much easier to comprehend once you've physically hand it apart on the bench to see what's-what!

Any ideas how much a working and 'overhauled' SL-S30UB is worth? Just before I stick it on the dreaded 'bay?

Thanks, as ever!

Andy

K Lambert
Tuesday 5th July 2016
7:51 pm U.K.

kn2000@talktalk.net

Hi Andy:

My, my I do seem to get about :)

Whenever you add oil to any bearing on these fragile items it's only a DROP .That's it.

I've had some sent/or won smothered in oil all over the reel spools on the friction parts and that is really annoying.

The pendulum does benefit a lot with the oil on the shaft as does the motor flywheel magnet base too.

Be very careful cleaning those video heads though. I've seen a few damaged by owners not appreciating their fragility.

If the head drum spins up there is nothing wrong with the hall effect sensor then.

Is the capstan motor turning OK and going in the appropriate direction?

As for the unlacing in FF and REW only the Sanyo models from their 1982 VTC 5000 and all their later models did that in Beta.

Also the industrial Sony also FForwards and REWInds away from the head set up too.

It keeps the tape flat like and audio cassette player.

The Sanyo's back tension arm pulls it out slightly to engage the tape end sensor.

......Kev

Andy
Tuesday 5th July 2016
2:04 pm U.K.

benham3160@gmail.com

Hi Kev,

Well I think I tracked down a post of yours *elsewhere* on the internet (seems you're a Suffolk man too), where I found a YouTube video of a guy stripping a transport down, which I've done, cleaned, lightly oiled (thankfully I found your helpful remark on the video about retaining the washers in order!!). The pendulum was full of erm.. .gunge and didn't move very freely at all (is this why the machine was abonded decades ago?) I've lightly oiled it as well as the capstan heads with some machine oil after wiping everything down gently with some propyl.

I haven't got a video irritatingly (and I can't find one locally) but if I fool it by holding down the microswitches to engage the loading mechanism and the one in the bottom of the transport it spools up and as far as I can test functions without a video cassette the pendulum swings freely and transfers drive to each capstan, I gently greased the loading mechanism gears and I'll give the heads a clean up in a bit as well as general cleaning around the tape transport.

The head spins up fine, pause releases the sound (?) head and stops drive to the capstands, FF/RW seem brisk but it obviously isn't under any load.

I'm guessing Beta machines didn't unthread the tape for fast-forward and rewind duty?

Thanks again mate,

Andy

K Lambert
Tuesday 5th July 2016
1:31 pm U.K.

kn2000@talktalk.net

Hi Andy:

No problem, when you seen many you get to know their good points and shortcomings over time.

That pendulum sounds fine to me.There should be no belt or spring. The inertia of that reel motor moves it one way or the other.

Does the head disc spin when you press play,or are you unable to get a tape to go inside it?

.....Kev

Andy
Monday 4th July 2016
9:27 pm U.K.

benham3160@gmail.com

Hi Kev,

You are of course entirely correct, just the single orange belt which is perfectly strong and intact.

There is "something" that makes me think something was broken/damaged inside the machine though, between the two tape capstans (that drive the cassette) there is a 'centre' pendulum type arrangement which is a plastic gear that swings to contact one capstan or the other, should this have a spring or belt or similar as it's just flapping around at the moment, I'd say it's some sort of brake without any knowledge.

I have vague memories of touching it and something breaking when I opened it when I was about 13 to see what was inside it, but that could have been an old VHS deck.

r b miller
Monday 4th July 2016
6:32 pm U.K.

rbmiller@cox.net

I have a usable betamax that I would donate to a betaqphile...orange county ca...email me

Antony
Monday 4th July 2016
2:02 pm U.K.

heritage_productions@hotmail.com

Its been a while, glad to see you're all still here.

I have aquired a SL-F30 which when I plug in and insert a tape goes into a spin, im not really clued up but not a total novice either. However upon opening and touching nothing, a white clip has fallen out.

It is small with a half moon type grip underneath if that makes sense. I have some pictures if required.

The machine takes up the tape but at first just played without any other functions till I switched off at mains. Im working atm but was gonna spend a few hours this evening.

I had loads at one time, split ftom the wife and have gotten back into the mode again ;)

Nicholas phipps
Saturday 2nd July 2016
11:50 pm U.K.

Nhckphipps@gmail.com

Thanks kev pretty much exactly describes mine then lol

K Lambert
Saturday 2nd July 2016
1:13 pm U.K.

kn2000@talktalk.net

Phil:

My pleasure my friend.

Andy:

Are you sure you've got that model number right as the C30 doesn't have drive belt's under the deck.

It only has the orange toothed one for loading ejecting?

........Kev

K Lambert
Saturday 2nd July 2016
1:11 pm U.K.

kn2000@talktalk.net

Andy:

If it is the SLC30 UB then the ONLY belt it has is a toothed orange one for tape loading/unloading and cassette ejecting, and it's not underneath the deck (that would be a C6 ,C5, C7 or SL8000. )

You will probably have difficulty getting one new now. Not impossible but difficult. I have never actually known one to break, stretch a bit maybe but not break.

A spares Sony ( C20, 30,40 ,HF100 or F30 would also have this same belt.

Nichola:

The reason the SLHF950 is sought after and worth a high price (would need to be serviced, or near mint with all accessories to justify a really top notch price), is it was Sony's ONLY really top end high quality beta format consumer recorder available. They are fairly rare, especially in a fault free really well looked after state.

The capacitors in the PSU have a habit of going high ESR and if left powered up for long enough like this will damage a fusible resistor and one or two transistors. I have seen a few like this.

They also can suffer with failing LED VU level meter segments, hall sensor, worn reel drive bearing. Areas of the loading sled can give grief too.

They do offer a impressive performance in Super Beta PRO mode with the special tapes.

Also make sure the Hi-Fi heads are fine .if they aren't it's usually down to high use and the reel bearing and PSU components will need sorting too.

Hope this helps....................Kev

Nicholas phipps
Saturday 2nd July 2016
8:48 am U.K.

Nhckphipps@gmail.com

Not that I'm interested in selling just curious why they seem to be far more sort after,or for sale expensively

Nicholas phipps
Saturday 2nd July 2016
8:46 am U.K.

Nhckphipps@gmail.com

Hi guy's hope you're all well,not posted here for some time,just wondering what a realistic price for a sl hf950 and wondering why they seem to be popular and regularly very expensive on eBay many thanks

Andy
Saturday 2nd July 2016
8:37 am U.K.

benham3160@gmail.com

Also Kev, I've had the model number confirmed as SL-C30UB, it has the original box as well as manual and remote.

It's just this mystery 'belt' that's given up the ghost!

Can you get hold of factory/service manuals for these machines anywhere, I'm an electrical engineer so I'm quite happy to give all the components a check etc before sale.

Andy
Saturday 2nd July 2016
8:32 am U.K.

benham3160@gmail.com

Hi Kev,

That may be the belt that has broken, it's been a LONG time since I peered inside the machine (about ten years ago) and I'm only going on what I remember, my parents have found it again in an attic clear out and were going to throw it away but I've asked them to pass it to be, so I can sell it.

I know a "belt" had broken in it, that may be the one. Is there any way it can be replaced?

Thank you for your help,

Andy

K Lambert
Saturday 2nd July 2016
1:12 am U.K.

kn2000@talktalk.net

Phil:

My pleasure my friend.

Andy:

Are you sure you've got that model number right as the C30 doesn't have drive belt's under the deck.

It only has the orange toothed one for loading ejecting?

........Kev

P McKeown
Friday 1st July 2016
2:10 pm U.K.

philip_mckeown@yahoo.co.uk

ITMA! A massive thanks through PALsite to the ever wonderful Kevin Lambert for bringing my Sanyo VTC5150 back to life with replacement heads, after I really thought it's time had come.

This man is whole-heartedly recommended to anyone else requiring Beta repairs.

Many thanks again, Kev!

Phil

Andy
Friday 1st July 2016
1:42 pm U.K.

benham3160@gmail.com

Hi,

I'm in the UK and am looking to get hold of a set of drivebelts for an otherwise mint (original box, instructions, remote etc) SL-C30 machine.

A belt under the tape transport has snapped with age (machine was hardly ever used and has been boxed since 1986) - can I still get hold of these?

Cheers,

Andy

Frandid
Friday 1st July 2016
1:42 pm U.K.

duckstar@free.fr

Thanks Gabriel. The first thing I did was to spray this whole area (without actually knowing there was a kind of switch inside) it didn't have any effect. So I will disassemble it. I hope it is not necessary to disassemble the LS... You mention 2 positions, I thought there should be 3 : Close, Open and Eject. There isn't any problem when the LS is closed or open, the tape works perfectly when the LS is inside or outside. When the VCR works with the cassette outside I can touch it, nothing happens. It is only in the Eject position that very often the LS reloads at the slightest touch of it, sometimes even without touching it. I will check this and hope you have found the cause for this strange behaviour of the LS.

Gabriel
Friday 1st July 2016
6:04 am U.K.

nospam@mymail.com

Frandid,

I have been looking the pages you stated and YES, that is the component I was pointing.

That's a very simple mode switch, with only two signals coming out of it (SK UP-1 IN & SK UP-2 IN). It's not specially complicated, compared to most VHS mode switches containing 3-4 or more signals.

Sometimes with contact cleaner is more than enough. You can even try spraying its surrounding before attempting to disassemble.

Good luck!

Gabriel

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