Good morning, I have a portable Sanyo VPR5800 that doesn't display colour in PLAY mode with known-good tapes, but does pass colour to the composite output when the colour videocamera is plugged in. Due to the difficulties of working on such a cramped machine, and the unavailability of the specific service manual, what would be the most similar Sanyo VTR in terms of chroma circuitry to this portable unit, with an available service manual that could be used as a guide? Does anybody know a typical fix for this problem? Thanks!

Marco,

Sorry I am so slow to respond, I have now visited the site for a while. No I have not solved that HF950 problem with fast capstan.

It sits there as a possibly spares machine as i have a few for repair.

regards Noel - Betaheaven.com - Australia

Hello everybody betamax fans. Okay, I change new video heads to my Sony sl-c9. Picture is now very good, no transverse interference stripes. But now the problem is the still image where it is snowing? What is problem? I think is it upper drum? Please can anyone help.

Hello, someone know for that videos is this head?

https://files.catbox.moe/fe8men.htm

Hello. Im talking about a vtc9300.

After cleaning, greasing and tightening belts the reproduction is good, but every 10 seconds the image goes to noise. If I leave the video in playback every minute that passes the frequency of error is less. I have read the whole forum and I have not found anyone with my problem, please, some expert who can guide me?

I made a video to show you the problem:

https://www.youtube.com/watch?v=bAR25XrRTVg

thanks in advance.

Miguel.

Miguel, this tv is of tube?

The non tube tvs are very demanding with the video signals, better test with a tube tv direct by video / audio inputs

Is connected by video / audio or RF?

Do you test with differents cassetes and tvs?

Do you clean all the heads?

What happen in pause?

What happen with you move the tracking?

Do you move screws of the heads or guides?

This vcr worked well sometime?

Was repaired sometime?

Someone changed something small or big?

Thank you David!

Now after this afternoon i retry the test but with worst results. I made a new video. I think could be a capacitor or some electronic component wich works pseudowell when its discharges and not workingt when its charged. I really dont know. This is the new video .... https://youtu.be/vFtDKP8QORQ

Miguel, this tv is of tube?

-Yes, it is

-Is connected by video

Do you test with differents cassetes and tvs?

- Yes, with all of them its the same. each 10 seconds it goes to a 3 secs of noise, and its a loop.

- In The last test i can not see anything, but if i unplug it and try tomorrow it will works like before.

Do you clean all the heads?

- Not really, because im afraid to broke them. anyway if the image works 10 seconds i think the problem is not of heads, isn'�t ?

What happen in pause?

- The pictures goes to black, and sometimes it flashes to white, but i can not see picture. You can see in the new video.

What happen with you move the tracking?

- This morning the tracking looks like it working, but does not fix the problem.

Do you move screws of the heads or guides?

- No

This vcr worked well sometime?

-No, i got it this days and after big cleaning im trying to come back to life.

Was repaired sometime?

- I dont know.

Someone changed something small or big?

-First time i turn on, in the servo board, a 4700uf capacitor burnt with smoke, i changed it for a 5500uf. that is the only change.

Thank you again from marbella, andalucia, spain. :)

About my problem with the sanyo vtc9300p. I found the solution.

The problem was there wasn't enough tension in the capstain's belt. I cut one more piece and glued it together and now it works great.

Thanks anyway David. I hope this help someday to anybody.

Miguel, I am from Santander (Spain)

The speed of the tape was more slow, by this reason appeared the noise

I clean the rotative heads with the vcr with the power supply disconnected

I put with alcohol a fragment of cloth with a finger and I put in the drum without move the finger

Only move the drum in the sense of turn (the same of play)

I don't remember if is clockwise or couterclockwise

But the tape play from left to right

I put here a pdf file from a Spanish shop of Video Heads, today don't sell video heads

Appears the references of the videos and images of the machanical and the heads

The most vhs but too Beta

https://files.catbox.moe/ezftbx.pdf

Hej

Jeg har en sanyo vtc5000 betamax

Jeg spole et b�nd igennem med billed p� lige pludselig stoppede den med at k�re

Jeg kan sagtens f� b�ndet ud og har pr�vet at s�tte b�ndet ind igen og trykker p� play den k�rer b�ndet p� til hovedet og viser billed p� tv i 2 sekunder og g�r ud

Men den kan sagtens spole frem og tilbage uden problemer og jeg har pr�vet flere b�nd men det er det samme problem

Har i et forslag p� hvad der kan v�re galt

Mvh Thomas

Thomas Rand perhaps the pinch roller and / or the capstan are bad

I have little information

Do you can to use the English?

Hi Again. So David, are you Spanish ? What a english name you have! :)

About my vtc9300p now the taut belt the image bounces horizontally. What do you think, master?

Thanks.

Correction: "now with the taut belt the image its good but bounces like five milimeters horizontally "

Again me. To finalise the subject of vtc9300 i have to say i remade again the belt with an old rubber from bicycle wheel. This is more elastic thant the original so i made it a little smaller. (230mm folded) and now works good. the picture is fine and there is no bounce (caused for excess of tension in the capstain belt)

Miguel which is your your email? for talk in Spanish

im stiil looking for the Sony SL-5400 or SL-5600 betamax VCR operating instructions if anyone have a time to scan and send me the copies to my email please

Any contribution wi be appeciated

Does anyone know of anywhere that still has old stock of the membrane that goes over the function buttons for the sanyo vac-6500

ivan I didn't find info about these vcrs

But I found in Ebay for sale, are NTSC and this site is for PAL

I waited to found service manuals in the web https://elektrotanya.com or in the web https://freeservicemanuals.info

These vcrs seems rare

James,

I doubt that you can obtain a new membrane for the Sanyo VTC6500 machine. My solution was to make a replacement.

I did that by creating a colour replica on sticky backed paper and covered the top surface of the paper with clear contact book covering material with also has a sticky back.

I can email you the picture to print if you contact me through my website Betaheaven.com

regards Noel Higgins - Australia