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Chat Page News
Friday 24th March 2017

Please bookmark http://chat.palsite.com/chat_page.py as the new URL.

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Stuart
Wednesday 1st March 2017
9:22 am U.K.

rabiacontralamaquina@gmail.com

Thanks for your help Bjorn.

I took the metal casing off and had a look inside and found a screw loose from a previoys service.Anyway when I put it back together and tried a tape again it worked.

jcarron2
Tuesday 28th February 2017
11:05 pm U.K.

jcarron2@gmail.com

Hi,

Need some help, I suspect I have an issue in the chroma area of my SL HF 600 Betamax. During playback of known good tapes, there is a somewhat noticeable yellow "hue" horizontal bar in the picture at about the 1/3 mark, and 2/3 mark straight across the screen, about the width of a finger on a ~25 inch set.. It does not move, and is very consistent...

The rest of the image is OK and clean. If I record a tape on this unit, and play it on another known good Betamax, the same hue appears there, but is much more faint...

Any ideas where to look? Should I just recap the Chroma, and possibly input caps?

thanks,

Jonathan

Bjorn
Tuesday 28th February 2017
5:54 pm U.K.

bjorn@bman.me.uk

Hi Stuart,

sounds like a loading issue. Does the tape even try to insert, or does it drop, then ejects within seconds?

Often cause is down to the rubber belts being worn which are easily replaced. Other causes include worn loading motor, dew detector picking up damp in the machine. However I would first look at the belts to see if they need replacing. Often the top one on the front loading mechanism.

Frandid
Tuesday 28th February 2017
3:19 pm U.K.

duckstar@free.fr

pumabr :

It seems on the video that the servo board is defective. The hall effect sensor might also be defective as the head drum never spins but it's not sure at all. This point is easy to check, difficult to repair for a "non pro" and anyway in this case it wouldn't be the only issue because this never causes the VTR not to play in FF AND RW for at least a few seconds.I own 3 Betamax ( SL-C9 F, SL-HF950ES and SL-T50ME ) and what I can say is that most of the time when you want to have one unit working perfectly you must buy several spares for each model and/or junk units for spares... The problem is that unlike the SL-HF950 for instance this model is not so easy to find... There is one on Ebay : http://www.ebay.fr/itm/Sony-Betamax- SL-F90 -Video-Cassette-Recorder-/182467768428?hash=item2a7bed306c:g:w0sAAOSw9GhYmG5D but it's impossible to say if it has working parts for yout unit. The first thing I would try is to replace the servo board. Repairing a servoboard is difficult if you are not a pro... Replacing boards is much easier. The problem might also come from the mecanical parts... And I agree with what Bjorn, Kevin etc. already said on this subject.

stuart :

I never saw a Sanyo but I would first check the tape sensors, you'll first have to find the service manual for your unit on the internet, see where they are located and if they work.

Stuart
Tuesday 28th February 2017
6:30 am U.K.

rabiacontralamaquina@gmail.com

Hi,

I just purchased my first ever Beta player today. It's a Sanyo betacord vtc-m20.

I have never owned or even watched anything on beta before. Anyway I have a question and was hoping someone might be able to help me. When I insert a beta tape into the player the cassette symbol flahes red on the display and after about 5 seconds it ejects. I have tried other tapes and it just keeps ejecting it.

Any thoughts or advice would be much appreciated?

pumabr
Monday 27th February 2017
7:12 pm U.K.

marcobrbq@hotmail.com

Hi again!

Finally I got a video with the complete diagnosis of the Sony SL-F90. The device does FF but not REW. And neither does play. The drum does not spin... Well, I think the video is the best way to describe the problem: https://www.youtube.com/watch?v=LkkVGXESSMw

Is it a serious problem? Will this be repaired?

Frandid
Monday 27th February 2017
2:29 pm U.K.

duckstar@free.fr

Thanks Martin, the previous/next buttons are now working again and the Sony SL-T50ME under my TV is happy to be recognised on this page like its two mates SL-C9 F and SL-HF950ES :-)

Bjorn
Saturday 25th February 2017
11:51 am U.K.

bjorn@bman.me.uk

Kevin, thanks again for your suggestion, just to update: I took your advice first before getting more complicated (although I tend to do the complicated first, then find it was a simple problem to my annoyance) Idler tyre worn as thought, plus worn pinch roller. Very simple mechanical problem. I do have a little electrical work to do, but nothing major. Repair completed successfully and watched a movie on it in perfect picture. Just have to fix Sanyo's famous front load problem as the jamming mechanism, although intermittent is frustrating. Front control covers (the plastic button coverings worn through so will have a new one printed and made up to fit. Video is almost restored to factory condition.

nickmugford
Friday 24th February 2017
10:36 pm U.K.

nicholas719@outlook.com

For disposal,3 working umatic video recorders plus one for spares,offers.

Martin
Wednesday 22nd February 2017
2:43 pm U.K.

martin@palsite.com

The previous/next buttons should hopefully now be working correctly regardless of having newest or oldest posts first. Also the T50 model is now recognised as a known model on the PALsite.

Bjorn
Tuesday 21st February 2017
10:09 pm U.K.

bjorn@bman.me.uk

Hi pumabr

It does sound repairable, but the problem could be due to one of many issues. Inadequate toque from the take up spool although unlikely, check for head drum rotation, a lot of Sony's I get in tend to have this problem. Ideally you could do with more information. Is there audio but no picture,does the machine play then stop, by no picture do you mean a blank screen, or lots of noise? Another common problem I find is where people have attempted work on the drum and messed it up either damaging or misaligning the heads.

pumabr
Tuesday 21st February 2017
4:14 am U.K.

marcobrbq@hotmail.com

Hi! I found a Sony SL-F90 for sale for 40Ä (plus shipping), but it does not play the tapes. The seller says that the unit turns on, rewinds the tapes, but when it does play, it does not give a picture on the TV. Is there a solution to this problem? Can this be repaired?

Frandid
Saturday 18th February 2017
12:09 pm U.K.

duckstar@free.fr

Ogulderen

I forgot this if you want to have the mono sound of your Sony player on both channels of your TV : http://www.ebay.fr/itm/like/172399697330

Frandid
Saturday 18th February 2017
12:03 pm U.K.

duckstar@free.fr

Ogulderen

First you have to buy a BNC to RCA adapter for the video signal: https://www.amazon.fr/Adaptateur-bnc-male-rca-femelle/dp/B000S0HTOM then a RCA cable for video and audio if your TV has rca input : http://www.ebay.fr/itm/Triple-3-Male-RCA-Composite-Audio-Video-DVD-TV-AV-Cable-1-4M-WT-/291789776168?hash=item43f006a528:g:HT8AAOSw9eVXXFxt , if it has only scart you'll have to buy another adapter https://www.amazon.fr/Bulk-Adaptateur-P%C3%A9ritel-gigogne-femelle/dp/B0017ZH80C/ref=sr_1_5?ie=UTF8&qid=1487418870&sr=8-5&keywords=scart+to+rca or a rca to peritel cable : https://www.inkstore.fr/store/logilink-scartkabel-scartstecker-cinchstecker-p-161876.html?gclid=CPTZpt7KmdICFfIW0wodhsQLZA&;gid=direct

I didn't know this model Sony SL-P20CH before, it seems to be one of the very rare Beta players only Sony made, looks a bit like a Sony SL-T20 VTR.

ogulderen
Saturday 18th February 2017
11:13 am U.K.

oggulderen2@gmail.com

Hi everyone,

I have a sony sony cl-p20ch video cassette player. But I don't have any cable to connect TV. I don't know which kind of cable I should use. How should I googling to find correct cable?

Thanks for helping.

Frandid
Friday 17th February 2017
7:57 pm U.K.

duckstar@free.fr

Thanks Martin, I didn't notice that "Show oldest posts first" was working !

As you are an administrator I will also mention the fact that writing " SL-T50ME " doesn't make its iconic picture appear on left of the chat page unlike other models references, and that the word "secam" almost never appear on the site yet most of european Sony beta machines were available in pal/secam or secam only versions bearing the suffix "F" instead of UB ES, E etc... Aaaaah, these french people always complaining ... ;-) ;-) ;-)

Seriously this is a great site and a real reference for all european Betamax including secam models as there is no "Betamax SECAMsite" and anyway secam models are clones to the pal models unlike US ntsc models.

Martin
Friday 17th February 2017
4:11 pm U.K.

martin@palsite.com

Yes you are right, there is a problem with the "previous" button. If you switch to "Show oldest posts first" it should work though. I will look into it.

Frandid
Friday 17th February 2017
3:31 pm U.K.

duckstar@free.fr

Hi everybody.

Did you notice that the "previons" button on this chat page doesn't work anymore, so we can't see older posts unless we've made bookmarks... is it maintenance ?

Does anyone know a special antistatic fluid that could be sprayed on the Beta head drums? I have now experienced this problem of "line tearing" due to dirt (from 33 years old tapes) sticked on the upper and lower head drum on my SL-C9 ,SL-HF950 and it will probably happen soon on my SL-T50ME. I don't use this last one often as it it my favourite, all in all I think it is the best picture for old tapes, yet drop out compensation is not as good as on the SL-HF950 and very far from the SL-C9, so I keep my SL-T50ME only for most of my Beta to digital transfers, if the tape is not too damaged and doesn't need heavy drop out compensation picture has outstanding pure colors. The SL-C9 is also great with uncredible contrast and was my favourite for a long time.

Does anybody have a link for a new replacement head disk for the SL-T50ME ?? Mine is still working OK at normal speeds, but at high speed the white bars are thicker than on my C9 and SL-HF950, it may indicate the heads starting to wear, although it maybe normal for this model as it is a multi-standard...? Is true that it is the same head disk as for the SL-C9 ? ?

Regards.

jcarron2
Friday 17th February 2017
3:25 pm U.K.

jcarron2@gmail.com

Hi,

I managed to get some epoxy to stick to the nylon gear (3-684-163-01), used a kind of mold to form the gear teeth, which turned out way better than I was expecting. It seems pretty tough, however Iím not sure for how long. The reason is the tape loading mechanism has *a lot* of stress placed on it.

When I load a tape I observe that when a tape is inserted, the servo motor runs to lower the tape into the machine, as expected. However after the tape is lowered, the motor still has power applied for a brief moment. I would have expected the power to the motor would be cut right after the tape_down switch is triggered but that doesnít seem to be the case, there is a slight ďdelayĒ (say 0.5 seconds before I see the belt slack off). As a test to verify the switches, if I trigger the load_tape switch and allow the mechanism to drop down, it will continue to run and apply power to the servo load motor until I trigger the switch tape_loaded switch which is triggered by the actual cassette, when I poke the switch with my finger, a moment later the servo motor stops, and the unit proceeds to the next step to thread the tape around the video head drum.

For now Iíve backed off the tension so the yellow belt can slip the 2-3 teeth instead of it really cranking down on the tape load mechanism, and possibly breaking that damn gear again.

To me itís working as designed, unless a capacitor has gone bad, and the timing is off with respect to when it should advance cut power and trigger the solenoid to advance to the next stage, load tape around the video drumÖ

If I am indeed correct, Iím not sure why this was designed this way, but I can see the area where the worm gear drive is attached kind of twist up from the tensionÖ The spring at the bottom of the worm gear is so strong that it doesnít allow the worm gear to ďslipĒ against the gear it meshes withÖ if that did slip, then maybe those would just eventually strip anyways.

In either case it seems to me if I leave it this way, it will be very short lived again. I am contemplating putting a current limiting resistor where J144 is, inline with the servo motor to try and reduce some of the torque from the motor, and perhaps save some wear and tear on the old mechanism which has so many NLA parts.

BTW Iím still looking for a replacement 3-684-163-01 Gear, Driving Arm gear, but any of the stores Iíve checked donít have any instock, it seems that what little stock was left is totally gone now.

Jonathan

Bjorn
Monday 13th February 2017
5:55 pm U.K.

bjorn@bman.me.uk

Thanks Kevin, yes that makes sense, I too have seen m fair share of poor work especially on Sanyo's. Worst, although not on this machine, involved using elastic bands instead of belts and in 1 case a cable tie. Misaligned heads, where someone has attempted to work on them but not put back together again properly, one machine had the upper drum too tight, sadly damaging the head themselves virtually writing off the machine.

Anyway, I have belts and idler wheels on the way so should have this Beta back up and running by the weekend.

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