Sanyo VTC 5400P

[ben]

How on earth did you connect that VCR to a PC monitor?

[andybaz]

As these are spose to be family tapes we are trying to save etc, obvioulsy not direct to pc monitor but through my pc etc.

[dj_fivos_sak]

Andy

That symtom looks like the AFC in the chroma circuit being just a little off. Dried out caps can cause this problem too. Unscrew the two bottom circuit boards and on the VD-2 board (the larger one), carefuly adjust the variable resistor marked "AFC" until the colour is stable during PLAY and picture search modes. First make note of the original position or resistance of the VR before adjusting it.

Regards,

Fivos

[andybaz]

Sorry folks, system just died, lost all sound, thank you for all who have commented, will keep a look out for another unit for our tapes, i did not get to try your AFC adjustments Fivos - lost all sound, tried different leads, all leads work, sound now failed.

Along with the image issue and temporary runing my counter on a rubber band - gona call it a day with this machine.

Thank you to all who read and everyone who has commented, seeming vtc5000 vtc5150 are the more common machines and are abit more reliable compared to the 5300 & 5400 machines.

[dj_fivos_sak]

How is the audio hooked up? Is it going to the PC's line input? Did you also try a TV using the RF connection?

[andybaz]

The VTC is getting old, gave it another go .... and i currently have picture & sound ... so will see if i can find the AFC you mention Fivos.

The connection to my pc is via a established no fault working usb device, tried it on our vhs unit so i know it was working then back to the beta this morning and now its working again.

Connections : phono connection to output audio and video is phono - bnc - video out on beta etc.

Sections of the film - which should be colour:
Showing clear black & white programme - no striped lines runing top to bottom across screen.
Then other sections show the purple/green striped across the screen.

So i will have a look to see if i can find the AFC you mention Fivos.

[andybaz]

Circuit boards unscrewed, no adjustable AFC labelled, so now scanning the rear green circuit board for the AFC marked component etc.

Well here she is open ... no AFC adjustable resistor on either board that i can see, checked with magnifying glass aswell.

[dj_fivos_sak]

Hi. This section of the board is the chroma process circuitry. Can you take a closer pic of this section please?

Note: If I recall correctly, my VTC 5350's adjustment is marked "AFC" and my VTC 5000's adjustment is marked "APC". So it might be like this on your 5400 as well.

[andybaz]

Hello Fivos, heres a selection of images from the LARGE circuit board - i have included the printed part number etc so you can compare to yours.

I started half way down the board where the screw is and moved across LEFT to RIGHT, then moved down a little bit more and did another sweep etc, cant see on the circuit or component side any markings relating to AFC or APC.

Got a couple more circuit images to load up and i also have taken images of the component side aswell.

[andybaz]

Here is the last 2 circuit side images

[andybaz]

Here we have the images from the component side of the board in relation to the area you mention Fivos.

I thank you for taking a look at these images.

My temporary repair elastic band for the front pulley is holding up fine, its not to too tight so it does not pull on the spindle shafts, just have to keep the counter reset button pressed so it takes tension off the rolling numbers.

Thank you to everyone who has read and commented upto now.

Regards Andy

[dj_fivos_sak]

Thanks for the pictures. The M51438P IC is the colour process chip (2nd pic). However, there are no markings of what those variable resistors do on the component side of the board. Are there any markings on the foil/soldering side? See my VTC 5350's board for example.

EDIT: I just saw the other pictures of the foil side view of the board, and there seems to be no markings for the VRs whatsoever. Damn. You really have to play around with them until you get the colour right since I can't find a manual for the VTC 5400/Fisher VBS-7600.

Regards,

Fivos

[andybaz]

Originally Posted by dj_fivos_sak

Thanks for the pictures. The M51438P IC is the colour process chip (2nd pic). However, there are no markings of what those variable resistors do on the component side of the board. Are there any markings on the foil/soldering side? See my VTC 5350's board for example.

EDIT: I just saw the other pictures of the foil side view of the board, and there seems to be no markings for the VRs whatsoever. Damn. You really have to play around with them until you get the colour right since I can't find a manual for the VTC 5400/Fisher VBS-7600.

Regards,

Fivos

Hello Fivos, thankyou for taking the time to look, i appreiate what you have done, will 1 at a time note starting position and make slight adjustments, i will update the post if i find it.

Thank you all for reading, regards andy

[Outrun_uk]

Originally Posted by andybaz

As these are spose to be family tapes we are trying to save etc, obvioulsy not direct to pc monitor but through my pc etc.

Could this be contributing to your colour fault? It may be wise to try the VCR direct to an older type CRT TV if one is available or if not then feed the video and audio out into a scart equipped set.

Kev

[andybaz]

Originally Posted by Outrun_uk

Could this be contributing to your colour fault? It may be wise to try the VCR direct to an older type CRT TV if one is available or if not then feed the video and audio out into a scart equipped set.

Kev

Hello Kev,
I set the betamax to play and recorded to scart on vhs, played vhs back through pc and had same stripy lines but yes on look out for a cheap working old tv to try. ☺
, cheers for your input though.

[dj_fivos_sak]

The problem is related to the chroma circuit. I once had a VTC 9350 (old piano-key machine that weighs a ton) play like this (see pic). Adjusting the AFC control cured the problem. I've seen this sympton on a VHS VCRs as well, and again, adjusting the AFC was the solution.

Regards,

Fivos

[andybaz]

Its a pity on my board they all called VR, nothing on board relating to AF so yep will set up and make a minor adjustment to each until i find something �� aswell as google the board number incase anyone has put previous images up etc, cheers for your help upto now folks.

[toshiba tony]

Doesn't that look like the subcarrier frequency is off?

[dj_fivos_sak]

Originally Posted by toshiba tony

Doesn't that look like the subcarrier frequency is off?

Yes. I believe it's the down-converted chroma carrier which is normally at 688KHz on Betamax. If it's slightly off-tuned, you lose colour.

[Sanbeta]

Was going to respond as I've worked on a few of these and the 5300.
Fivos and Ben's comments are SPOT ON.
Go with their recommendations and you will get a good result.
The only thing I don't like about these early Sanyo's is the fact they stay laced at all times. They unlaced for the FF and REW modes from the very popular VTC 5000 and stayed that way until production of their beta models ceased around 86/87.

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