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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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K Lambert
Thursday 24th January 2013
12:30 pm U.K.

kn2000@talktalk.net

Hi Guys:

I have found through personal experience the first function that ALWAYS goes bad when a pinch roller is shiny/worn or faulty is REVERSE SEARCH.If you go into reverse search mode and the tape moves up and down or you hear that dreaded clicking/crunching sound,that usually tells you the pinch roller needs a good clean or replacing.Sometimes too on the Sanyo's you can get a rogue capstan shaft that also causes un eveness in the reverse search modes.You can usually see a grooved forming whereby the chrome is wearing where the pinch roller has constantly been applying pressure.As regards using a properly serviced unlacing Sanyo for the FForwarding and REWinding.I always do just that if buying old used tapes.It helps to clean of dry white powder mold, some old tapes have formed ( usually by being in damp environments).It's far better than using them in a always laced early Sanyo,Sony or Toshiba as the stuff will always contaminate the video heads and tape guides/drum.Some i also note who sell beta tapes on E-bay (especially pre recorded ones) don't rewind them.This is not good for the tape especially at the beginning as it will stretch if left like that for long periods of time, and you will see a wavy line go from top to bottom when viewing at intervals,where the stretch has occurred.

Another point of interest ,despite being told magnetic tapes recording deteriorate after so and so years, i have some very old that are showing no signs of this .it may be a ploy to get you to have them transferred to a digital medium. Hmmmmmmm?

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

Gabriel
Thursday 24th January 2013
6:59 am U.K.

gabrigpb@hotmail.com

Droszi,

It is known that when tapes are not used for long time (twenty years is a lot), problems arise later, specially if they have been kept in horizontal position. When I find something like this, I have a rule of thumb: using a tape rewinder to "freshen" the tapes with two or three passes or using a Sanyo machine to perform this. Sanyos uses better design than Sonys, not lacing the tape when rew/ffwd. Even a discrete VTC-5000 (with healthy rubbers) is pretty good for this purpose.

However, when existing intermittent tracking problems, first item I check is the pinch roller.

Regards,

Gabriel
Thursday 24th January 2013
6:48 am U.K.

gabrigpb@hotmail.com

Noel,

Yes, they are quite different indeed. I guess that F90 is a VCR which was built by the end of Beta days here in Europe. Because of that it's difficult to find one (VHS was widely accepted). On the other hand, having a look to my "scrap" videos, I have realized that F90 shares the servo IC with the F20 model (odd but true). Now I'm trying to find the service manual for F20 so as to having a clue.By the way, applying 4V to the servo pin (drum) makes it spin. So definitely I have a servo problem.

Now, I have on my bench two C30 s with rewinding issues (both them rewind too slow). Guessing a definitive cure for this annoying problem and thinking about building a torque test jig for rew/ffwd. However, I'm pretty sure that it's a question of a worn out drum's surface.

Thanks for your great support Noel,

Noel Higgins
Wednesday 23rd January 2013
12:14 pm U.K.

noelmh@nospam.tpg.com.au

Gabriel,

I have only seen the SLF30 and SLF60 machines. I have a service manual for the F30.

Sorry I cant help you because I have never seen an F90. I don have an F50 though and I didn't even know they existed before I got it through eBay. Quite different in design.

cheers Noel

droszi
Wednesday 23rd January 2013
7:39 am U.K.

droszie30@gmail.com

Gabriel, thanks for your reply. The pinch roller is ok. As I mentioned many tapes play ok. The failing ones are our family memories which were not played for at least 20 years. The strange thing is, that my father yesterday tried to play again the failing tape and this time it was fine with the tracking set to the center position. Is it possible that the tape didn't like to stay on the shelf for more than 20 years? :) All that happened was he rewinded the tape and played it again. Is it possible that the band layers on the reel were stuck together and a play/rewind fixed the problem?

Gabriel
Monday 21st January 2013
8:29 pm U.K.

gabrigpb@hotmail.com

Droszi,

Have you first checked the pinch roller? If worn out, it can show similar sympthoms.

droszi
Monday 21st January 2013
3:29 pm U.K.

droszie30@gmail.com

Hi!

I'd like to ask you for some help. I have an SL-F1. Many tapes play ok but many of them have some tracking problem. It's simply impossible to find good tracking. Even if you manage to find a good tracking position it keeps locked for only some tens of seconds.On the (rally excellent) palsite there's a tip to re-adjust capstan bias but no instruction on how I should do that. I'm quite good at electronic, I think my real problem is that I'm not perfect in english. Is this capstan "bias" a mechanical thing, like a spring or is it a bias voltage to adjust by a trimmer?

Besides, does anyone here have the service manual for this machine in electronic format?

thanks,Droszi

Gabriel
Sunday 20th January 2013
5:33 pm U.K.

gabrigpb@hotmail.com

Noel,

Thanks a lot for offering those schematics. However, design from SL-F30 differs a lot from SL-F90 (the one I need) and internally they don't have much in common. Have you the SL-F90 service manual?

Best regards,

Gabriel

Brendan
Sunday 20th January 2013
5:33 am U.K.

bgc1995@hotmail.com

Hello George,

You can connect it with coaxial cable and then tune it. Or use the video and audio in/outs. The video connectors are UHF connectors. You can buy adapters that can change the UHF socket to RCA, then use RCA cables. The audio connector is DIN. Best option for that is to buy the cable with a DIN plug on one end and 4 RCA plugs on the other. Two will be input audio and two will be output audio. You can just use one of each though, as it is still mono. Hopes this helps with what you are looking for. As for where you could get them in the UK, I would not have a clue. If you were in Australia, Jaycar is a good option.

Cheers,Brendan

George Davidson
Saturday 19th January 2013
8:26 pm U.K.

dottie59@talktalk.net

Just bought a Sanyo 9300PN but no audio/videoleads, anyone know where I might get a set?

Noel Higgins
Thursday 17th January 2013
11:49 am U.K.

noelmh@nospam.tpg.com.au

Gabriel,

Send me an email and I will do a return email with the Sony SLF30 servo circuit scans.

regards Noel (betaheaven.com)

Ross Willett
Monday 14th January 2013
6:49 pm U.K.

rosswillett69@hotmail.com

Thanks guys! The person said they can accept 30 for the C6 machine. Being honest, I am planning on starting a small Betamax collection and enjoying watching these films. Especially if I can get a hold of films which have never been released on DVD. I am only planning on watching films with it. Thanks

James
Monday 14th January 2013
7:08 am U.K.

jlaing35@hotmail.com

The C6 is a good basic machine, The C7 offers more features. But if you are only going to do backups then the C6 would be fine. Thanks to Noel Higgins and a service manual I was able to restore my C6.

For the C6 I would offer no more than 30 for it.James

K Lambert
Monday 14th January 2013
12:31 am U.K.

kn2000@talktalk.net

Hi Ross;

The C6 does offer a good picture and sound quality but IS a very heavy and bulky beta vcr.The 'picture flash' is no doubt down to the common issues of bad capacitors in the servo area and a tweak to the head drum motor pot after those have been replaced.The idler tyre for the loading ring mechanism can be an issue too.As for the price Hmmmm.If you could get it down to around 35 to 40 (as you will need to get it sorted) that would be a better offer.

Good luck whatever you do..............Kevin

Ross Willett
Sunday 13th January 2013
4:13 pm U.K.

rosswillett69@hotmail.com

Theres been a mistake. It is a C6 Which is for sale. The person also has said the following: "there is a flash of interference but the picture when good is excellent as is the sound" Not sure if its worth buying this or not. Any advice? Thanks

Ross Willett
Sunday 13th January 2013
1:31 am U.K.

rosswillett69@hotmail.com

Just been offered a Sony C7 Betamax for 50 Is this a good Betamax recorder? And is it worth 75? Thanks

Kduvzshb
Wednesday 9th January 2013
5:51 pm U.K.

lppgzbvz@hizmaxtu.com

There are some loans out there that will accredit admitting no exception disguised fiscal crises to address with an actor when barter with financial matters. ,

Lopgxgjc
Wednesday 9th January 2013
4:19 pm U.K.

tnzjrtkm@mfhzounj.com

At present, US financial Wall Street is at flood with ESP on file to when fulfilling the requirements. Like added types of loans, you also need to adhere to a reckoning of is done on the loan absorption. ,

Ezpfifih
Wednesday 9th January 2013
2:49 pm U.K.

ssynckah@ivwalaig.com

Anyone who wishes to get accorded the antichresis must be 18 or some fast cash, you wisely, they can be a good act. ,

Gabriel
Tuesday 1st January 2013
6:37 pm U.K.

-@gmail.com

Noel,

I'm going to follow your tips. They are quite useful for me. The servo scan would also be helpful.

Thanks a lot and Happy New Year.

Regards, Gabriel

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