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Hi, first time here.
Sanyo M20 - is there a downloadable service manual that anyone has found? My M20 accepts the cassette, but only makes a whirring noise if I try to play, rewind or forward wind.
Regarding your Sony SLC5UB stopping at regular intervals of around 10 seconds during play. Set the machine to play with the top off and observe the tapes path to the back of the machine behind the head drum and the action of the tape slack tension lever just after the capstan roller. This should be firm and not moving in and out. Movement indicates that the forward tension is varying which may require replacement of the parts related with that mechanical drive system for the tapes pickup reel. That might be a rubber roller or the actual tension unit which has a slip mechanism involving a spring and felt pad under tension. The levers purpose is to stop the machine if the tape breaks or tangles of tape filling the machine under fault conditions.
regards Noel (Betaheaven.com) Australia
I wonder if anyone can help me with a very old Betamax player?
I have a Sony C5ub that's been in the loft for many years after a belt snapped, must be 20 years ago!
Finally got round to trying it again as have some irreplaceable tapes, having sourced some belts recently.
Replaced all and after some fettling and lubricating it appeared to start working albeit with a display that has some horizontal lines and flickers into b/w and back into colour during playing. Thought of replacing capacitors as per common advice but another show stopping issue has cropped up after it played nearly 15 mins.
Unfortunately, having run for 15 mins, this worst fault is that it plays for 10secs to a minute and then switches play off. It will start again when play is pressed and repeat the cycle. Fast forward and reverse seem to work at roughly the right speed whilst in this state. After going through the play-stop-play-stop routine a number of times it stops playing/FF/RW until power cycled. Then it works again as described. When it is in the 'failed' state it will still unload and load tapes but not play them until power is cycled.
Loading and unloading work at a reasonable speed and as mentioned all belts have been renewed (and that was a hard job).
Any suggestions would be gratefully received. I should add that this is the first time I have worked on a machine like this so please describe any adjustments or things to check with that in mind. Without the MrBetaByte videos on YouTube I wouldn't even have tried to recover this machine.
I know I'm probably looking for a unicorn but does anyone know where I can lay my hands on a reasonable condition SL-C9 ACE assembly for my Sony SL35 . Im in Brisbane Qld Australia.
In the middle of converting old family Beta tapes to DVD and sound has all but disappeared.
Thanks in Advance.
Many thanks for your response. I am looking at machines on ebay and one disadvantage of the Sanyo vtc-5000 is that many of them seem to be located in the UK. As I live in Ireland I have to take account of Brexit charges.
A slightly newer Sony from an EU seller and a vtc-5000 from a UK seller could end up costing me about the same. Pros and cons to everything I guess but with 1980s electronic/mechanical devices, relative simplicity and parts supply have to be big considerations in 2021!
Thursday 18th November 2021
11:38 pm U.K.
Regards to the Machines you were asking about sonys are good reliable machines but picture tends to be richer and a little grainy
the Sanyo VTC5000 is a blinding first timer machine, easy maintenance, parts available, simple bits like CAPS issues etc
heads are floating around for these units but you need to look to find them
any issues email us and may be able to help you
Apologies for the tardy reply, work has been manic
thanks for the numbers - was there replacement numbers in place only reason i ask is i have heads with numbers im not sure about
i know they are beta heads
once again many thanks for your help mate
Hi,I have a C6ub which has a perfect picture,but it is only in Black and white.I was told this is a common fault.....is there a fix for this
Hi, I recently purchased a Sony SL- C35LS and all was fine. I have been digitalising old tapes. The issue I am now having is with sound. The sound has reduced significantly to the point of being barely audible. I have cleaned every surface that looks like audio points to no avail. The picture is clear. Can someone direct me to where I can locate the audio pickups so i can ensure i have cleaned them all. To clean I used isopropyl alcohol and a cotton tip. Thanks for any assistance you can give.
Iím looking for Disk assembly for sony betamax sl-300me
Can you help me ?
I have been given a partly working Sony C7 and a box of home recorded tapes (some of which are very mouldy) that were recorded on it 1985-1991. The C7 loads and plays tapes but picture is unstable and flickers which I think means bad capacitors. Also, RW is very slow and some tapes won't RW at all.
I do not have the skills to attempt a repair but perhaps I can acquire the ability at some point. For now I'm thinking about buying a refurbished machine on ebay. Based on prices and reviews, I was thinking of a Sanyo VTC-5000 or a Sony SL-F60. One of the things that I want to do with the tapes is extract the teletext from them which is something I've done with VHS.
Considering my poor repair skills, limited budget and mouldy tapes, would anyone have any comment on the two machines mentioned above. Thanks!
In regards to your 'no sound' issue on the VTC 9300.
AS this is an early Sanyo and keeps the tape laced at all times.Check the sound part of the stationary head is'nt blocked with dirt/tape debris.Also Also check the lead, if using the optional audio output connection.
If using RF then the tuner may have an issue or it's frequency output needs tweaking, as many were retuned away from CH36 down to interference when Ch5 was first aired.
Failing all that it could be an issue with the sound board in the VCR (common suspects are Electrolytic caps or the IC itself).
Chaps need a little help here
I'm looking for the head part number for 2 models as i cant read them clearly from the heads i have, and just need someone else to confirm this
Sanyo VTC 5000 - it has a 7 digit number on the head and it looks like it reads 242V224 E3PS is this correct for this UK model
Sanyo VTC M40 - it also has a 7 digit number that's a bit unclear but it looks like it is 242V038 but I'm not sure - can some one check their machines or does anyone know this UK part number
the M40 looks like some faded numbers also looks like 40720 but not sure.
Can some one please help as i need a little assistance.
I have a Sanyo vtc 9300. I have it connected to T.V with a great picture quality. However, i cannot get any Audio. Tried several tapes and same issue,, great picture, no audio.
i have an SONY SL-5400 NTSC VCR without the poerating instructions primary manual can anybody can take the time to scan and send me a copy in pdf or jpeg of the SONY SL-5400 VCR operating instructions manual please'
any greetings will be appreciated my email is [email protected]
i have an SONY SL-5400 NTSC VCR without operating instructions primary manual can anyone can take a time to scan and send me an pdf or jpeg copy of the SONY SL-5400 operating instructions manual please?
Any greetings will be appreciated
I have an SONY SL-5400 NTSC VCR withtout the primary operating instructions primary manual can anyone can scan and send me an pdf copy of the SONY SL-5400 operating instructions mmanual please?
Any greetings will be appreciated
Apart from what Kevin told you which are the most likely issues, the Sony C20 (and other models in the series) can also have issues in the power supply with RF noise being generated by the regulator circuits if the capacitors have aged. Replace all three of the 10uF capacitors on the board. Another issue is the carrier balance setting which gives blue diagonal lines on the picture if not set correctly to null the carrier.
See http://www.palsite.com/slc20tech.html for hints on issues.
Check out Betamax models on Palsite under Technical page option. The link for the C6 is http://www.palsite.com/slc6tech.html
However as a rough guide replace all the light blue colour Sanyo electrolytics on the SS9 base board around the Drum and capstan servo areas of the board.
Over time these capacitors have either dried out changing capacity and or developed high ESR (equivalent series resistance) which changes the timing of R/C timing circuits.
Then adjust capstan and drum servo voltages as per manual of instructions on the technical page. Play a tape then do these adjustments. (The service manual says record but with no analogue TV broadcasts now that's more difficult to do unless you insert content via the AV line inputs) For Capstan adjust RV3 whilst monitoring TP5 test point to set voltage to 5.5V. For Drum servo adjust RV9 on SS9 board whilst measuring voltage at Drum test point which I think you set to 5.1V using a CRO. I don't know the TP number for sure but I think its TP2. However you can set it by eye using the playback picture and leave the adjustment at the midpoint between when each end of the adjustment where it rolls.
That is the general electrical issues addressed. Hardware alignment might also need attention, that is a clean and then adjustment to tape path if necessary.
Be aware that replacement belt kits are often needed to restore these machines to correct operation.
regards Noel (Betaheaven.com - Australia down under)
Hi folks, I wonder if anyone can help? I've recently purchased an untested C6 from ebay. I got lucky in that it powers up, laces perfectly and all functions are "working" only the picture is terrible. The picture is visible but there's hunting / surging, a haze of static and a continual strip at the bottom of the image that I can't track out. I haven't started pulling it apart yet other than to clean the heads. I am going to assume that at least some of the caps need replacing. I wonder if anyone has a list of the types, ratings etc.? I see this was done a few years ago here http://www.r11txe.co.uk/uploaded/c6-ss9-caplist.xls but the webpage is now down. I'm also going to try to find a replacement belt set. Thank you in advance.
Hi Kev, Thankyou for the reply. Had a closer look and it seems to be the wheel with the tyre that's the problem, Fast forward and forward search it seems to flip over nice and strong but on rewind and reverse picture its lazy and doesnt seem to push as strongly against the rewind spool then clicks off back to the middle after around 3 seconds. Any ideas please?....
In regards to your current issues with the C20 , it's down to either the heads are dirty,worn or damaged as that would cause static and no picture.
Also check the soldered part of the BNC OUTPUT as those types of sockets to the boards on the Sony's are vulnerable to knocks resulting in the solder getting cracked.
As you have static though i would suspect the first three things to check.
If you have never cleaned a video's heads then tread carefully as they are VERY FRAGILE.
What i would suggest is put tape in your know to be good quality and let that play for a time, even FF and REW it, as it's always laced around the head drum.
See if things improve.
I have a Sony C20 that is in really nice condition but whatever tape I try to play it is just snowy / static. If I fast forward or rewind then I do see some faint scrolling diagonal lines. I am pretty sure that the tapes do have content on them so I am assuming the unit itself is faulty.
I am connecting to the composite input on my CRT tv using the BNC video output on the back of the Betamax with a BNC to RCA adapter. I assuming that this should give me an output but i am not sure if I need to use the RF output instead.
Do these particular symptoms suggest an area I should be focusing on to try and repair?
Hopefully someone can help
Good to see you here.
You say the idler (center pulley) is playing up.It sounds to me like it's a bit stiff on the shaft for it not too move like you state.
As the geared top part does the search and PLAY modes and the rubber lower the FF,REW and take up after stop.
Also on the very early VTC 5000 's (with the flip out right side end sensor and one piece clutch).Some of these center pulleys were shiny for the contact part of the rubber idler tyre. Sanyo soon realized that mistake and all other plastic friction areas were grooved.
The one piece clutch's (which could be tricky to set up and therefore make the back tension at times a bit higher than required) were also exchanged after time for the more reliable and consistent two piece ones fitted to their Beta's right up until the end of production.
As for your issue i would see if the center pulley is a bit stiff or not move freely and then make sure the others mechanicals are also free to move.
Also a video of said action is a big help too..
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