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K lambert
Friday 21st July 2017
1:16 am U.K.

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David:

The shimmering or even in some cases horizontal dark lines through the picture in large areas of red is normal to many vcr's. Some are better than others.

As for these white flashes you mention. Those are drop out's and will be worse the more tape wear there is, or if the drop out compensator needs a tweak.

Sony beta's seem to deal with this slightly better than the Sanyo models.

But once again will depend on the parameters I've mentioned.

.......Kevin

DAVID BRUNNER
Thursday 20th July 2017
8:26 pm U.K.

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Kevin, I played a tape near the finish, where needs more force and now run good but appears in b/w with many white short lines but not jump the image, this was with I bought the SL-F90

In your videos with a tube tv and the control colour high do you see a horizontal lines tremble in the red colour or colours that contains the red?

This happen to anybody?

This happen to me with a SL-C30 and SL-F30 with original tapes and recorded from the tdt

Too with the vhs videos but not with the tdt and U-matic VO-2630 in the same tube tv

K lambert
Thursday 20th July 2017
11:10 am U.K.

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Here you go guys ,as promised the actual adjustment pot numbers ON THE SERVO BOARD and the coding for each one on the SONY SLT30me.

RV 501 XO JIT

RV 507 CCIR TRC

RV 506 EIA DFS

RV 508 EIA TRC

RV 505 CCIR DFS

RV 504 SW PB

RV 503 SW AP

RV 11 DRUM FH

RV 515 B2 N

RV 518 B2 F

RV 520 EIA C/R

RV 519 B3 F

RV 516 B3 N

RV 517 CCIR F

RV 514 CCIR N

RV 521 CCIR C/R

RV 513 FG 2

RV 512 FG 1

Any ideas which one could be the forward torque setting???

....Kev

K lambert
Thursday 20th July 2017
11:01 am U.K.

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David:

If the reel brake solenoid is working then you can count that out.

Have you checked the motor magnetic flywheel. If the base bearing is worn then this magnet will rub the coils ,eventually causing a short if left long enough. This will also cause low torque in the play modes.

As for the readings I have no idea, i've never had to check those.

Also could not see those images, the link doesn't work for me.

...Kevin

DAVID BRUNNER
Wednesday 19th July 2017
10:58 pm U.K.

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The cables from sensors of rec and cassette in are good (very low resistance)

In the solenoid more near of tape, between common and a cable has 141 ohms and between the common and the other cable has 18 ohms

The voltaje in stop is 0 between common and each cable but in play between common and a cable has 11,22 volts and with the common and the other cable 1,38 volts

Are correct the measures?

DAVID BRUNNER
Wednesday 19th July 2017
7:16 pm U.K.

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Kevin, when I play works the two solenoids

https://titulos.000webhostapp.com/VIDEO.JPG

I play with tape and without tape as in this image, the reel of the right has low force in play, I stop with the hand easily

In fast ff and rew the 2 reels run with force

What function has the gear that I put a arrow?

steve
Wednesday 19th July 2017
4:02 am U.K.

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I recently purchased a Philips V2840 and new to this format. Very foreign to me for I have always owned/serviced U-Matic/Beta/VHS decks in the past. It seems impressive for its era. Does anyone know where one can source some good blank tapes, new or used.

Thanks

K Lambert
Tuesday 18th July 2017
12:04 am U.K.

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Gabriel:

What I will do is take a note of what is put on there and maybe we can come to some conclusion as to what they might be for.

Thanks again......................Kevin

Gabriel
Monday 17th July 2017
7:45 pm U.K.

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Kevin,

Quite interesting the lack of Torq writing on the board. Might be under "Fwd" labeling?

However, with some reverse engineering you may be able to track back the wiring of the reel motor, find its related connector and continue to go back until you find the transistor (or the set of them) in charge of supplying the motor's signal. Just looking at the surrounding trimmers could be a clue.

If this T30 uses the same SMPSU as its sibling the T50... Might be a PITA, they are sometimes tricky to fix.

All my wishes for your success.

K Lambert
Monday 17th July 2017
7:15 pm U.K.

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Hi Noel:

once again I appreciate the assistance but there is no TRQ or TORQUE labelling on this servo board.

I used the felt band adjuster to get the back tension better, but the forward one is a mystery. Seeing as it's a multi standard machine there are two set's of two pot's no doubt one for PAL/Secam and the other for the NTSC adjustment.

I managed to get the PSU working but it still had s one annoying issue.

When turning it off the ON light does not go off and the power stays on but the channel light goes out.

If you press the power button again it will not load a tape until you unplug it.

It did start to work fine and all going off for a few goes but now it's doing this.

There were numerous ceramic capacitors bad as well as the electrolytics and a also a bad coil and two resistors.

Together with a bad hall effect sensor on the drum.

Typical Sony you sort one issue out then get another.

........Kevin

K Lambert
Monday 17th July 2017
7:07 pm U.K.

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Hi Gabriel

I did look for those digits in regards to forward torque but sadly there isn't any for that.

The back tension I have set to 30 It was around 22.

It's just finding that torque adjustment pot as it's only around 40 at this moment in time which is woefully out of spec.

I appreciate your assistance though.

sezgin
Monday 17th July 2017
3:02 pm U.K.

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Hi my device is working sony sl-f90 but there are no colors only black and white solution can be found

Gabriel
Sunday 16th July 2017
8:42 am U.K.

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Kevin,

The SL-T30ME is a 711B chassis so you might follow the same procedure as for the C20 or C30.

Back tension: spring adjustment (stair-wise on tensioner lever) on the reel table - 35g

Forward tension: "TORQ" potentiometer on the servo board - 70g

Kind regards,

Gabriel

Noel Higgins
Sunday 16th July 2017
12:10 am U.K.

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Kevin,

I researched this a bit more because I don't have an SLT30ME at the moment to check.

I only have the SL30ME manual and an SLT30ME supplement for the video board changes. (Not sure how much they share inside as externally they look different.

The SL30ME manual does not mention back or forward tension settings itself but under mechanical adjustments refers to the chassis adjustment manual 2. I don't have that manual.

The SONY tspe path adjustment guide indicates three types of chassis used

C type - for the very early SL8000 and older

710 type for the C6 versions and variants

711 type for the later smaller chassis most sony NTSC and CCIR sytem machines including the SLT30ME.

If the back tension lever is mechanical like on an SLC30 then its a spring tension adjustment.

If it uses an arm/magnetic solenoid system like an SLC9 then you will have a setting on the servo board.

The forward tension setting in an SLC30 type chassis (or SLHF100 ) will be another setting often labelled "torq"

cheers Noel (Betaheaven.com)

Noel Higgins
Saturday 15th July 2017
11:33 pm U.K.

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Kevin,

The forward tension should be 70gm and the back tension should be 35gm.

I have only seen higher settings that that for back tension in a Sony machine on the SLO1700 which is 48gm.

cheers Noel

K Lambert
Saturday 15th July 2017
3:50 pm U.K.

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Hi Guys

Does anyone have the back and forward tension spec settings for the Sony SLT30ME multi standard Beta vcr?

Also if so the number of the adjustment pod (s)?

I do have the service manual but it stops before you get these critical specifications.

Thanks in advance.................Kevin

K lambert
Wednesday 12th July 2017
8:27 pm U.K.

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David

What I would do is check that the reel brake solenoid is doing it's job.

When you press on on the vcr you should here two distinct clicks. One is the main solenoid activating and releasing the back tension and pinch roller and the other is the solenoid for the reel brakes.

The F30 (similar in design to the f90 ) is known for the fusible link to this failing,as I've just seen on two of them.

...Kevin

DAVID BRUNNER
Monday 3rd July 2017
4:27 am U.K.

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I have the sony SL-F90 the reel motor has a few power and the tapes stop in play or damage, in forward and rewind fast works perfect

I read that sony has a kit for repair the reel motor

The problem is the reel motor?

Misha Berghege
Friday 30th June 2017
5:13 pm U.K.

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Sorry for the late reply, just picked up the SL-C80! It's in working order, unfortunately without the original remote...

Gabriel
Thursday 22nd June 2017
10:25 am U.K.

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Frandid,

True, we almost replied at the same time!

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