Question about Audio Players & Recorders

2 Answers

I have a Saalburg 5380 C 1964 radio. The tuning dial does not work. When i open the back and have a look it apears that the shaft from the tuning dial which controls the tuning capacitor(Trimmer) must be damaged. The capacitor vanes do not move. They are not stuck but the shaft is not turning them. I think i will have to remove the transparent wheel and examine the shaft but how on earth do i do this? There are two cords distributed from this wheel. Please help.

Posted by on

  • vincent39 Nov 06, 2008

    Finally fixed the cords ok after a struggle. But the drive shaft to the tuning capacitor is still a problem. The grub screw holding the plastic wheel to the shaft(and also therefore allowing the shaft to be turned) is scraping around the shaft diameter and not holding the wheel. I have really tightened this grub screw but it still does not turn the tuning vanes! I am niot sure how to proceed. I suppose I could remove trhe grub screw and try and drill a hole thro the shaft and insert a machined bolt?

    I will have to remove the tuning capacitor to the bench to do this and there are at least two wires attached to the capacitor. Or is it simply that the vane and shaft neeed lubricating? I notice that the top half of the capacitor is clear plastic. Can I remove this?

    Regards

    Vincent Kennedy

×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Robo
Has just solved 95% of my radio problem!
Brilliant to finally hear from a professional. I still have minor problem with the shaft on the tuning capacitor buy i am working on this
Thank you again for your assistance
Vincent Kennedy

Posted on Nov 06, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 1,512 Answers

Hi

So you have a slipping dial pointer/tuner drive on your vintage radio. It will be old age catching up with it for sure:) The shaft may have dried grease in its bushings seizing slightly, or more likely, the dial drive cord has lost its "grip". They do stretch over the years. I recall as an apprentice having to do every faulty dial cord that came into the workshop, until we got a new apprentice that is :)

Best bet, BEFORE YOU START doing anything, even if the cord is broken, make a hand drawn diagram of exactly how the cord runs. You may be able to find one that matches up to your radio here, Short of that(as well as), take closeup photos from several angles.

Once you are confident you have an understandable diagram of how it is strung, you can proceed to mess with it.

I have to be honest, completely replacing the cord is what I found to be the quickest/most reliable way to repair them, but then I had plenty of practice in the end. If you don't have the correct type of dial cord string, then repairs can be a fiddly, but effective option to attempt.

First you need to determine if the cord is failing/stretched, or if there is a stiff bearing point. This takes a bit of hands on approach to determine. put some additional tension into the cord by pressing down on it and see if the drive improves. If it does, then you may be able to apply more tension into the drive by shortening it a little. Do this by carefully unhooking one of the retaining springs that secure an end, without removing the chord from the spring, retie the another loop knot(as many as you need to before there is no more room to do so) onto the spring to use up some cord shortening it. Apply a dab of nail varnish to any knot once secure to be sure that it does not come undone. You can just cut the knot away and retie if you wish also, just fiddly with the limited amount of string you have to work with. It often does not take much to re-tension it. Sometimes it may be as easy as fitting the spring to another tighter hook point on the large pulley(if you are lucky) This can be about the time when you are thankful you made a diagram of the way the cord is strung,as things can get messy.

If it appears that the tuning gang is seized, then a drop of penetrating oil to the bush will help it. Work it back and forwards a little to work the oil in. The large pulley attached to the tuning gang can be removed here also if you wish to work on the gang. use some tape to secure the string in place to the pulley and it can generally be removed from the gang and secured back onto the chassis somewhere, whilst keeping tension on the string. Check also the free running of any brass pulleys along the drive. It is imperative that you don't get any oil onto the cord itself or the drive surfaces of the pulleys. ... or you will need to replace the whole thing. A syringe is the best applicator of oil for these jobs. Lubricate sparingly and as a last resort only.

Worst case, you may need to completely restring the drive anyways. I did suggest that at the start.

Good luck with your dial drive repair. If you need new cord, it can be purchased from a vintage radio restorer online or just take it to a vintage repair shop in someones back shed in your neighborhood :)


regards
robotek

Posted on Nov 06, 2008

  • Graeme Ross
    Graeme Ross Nov 06, 2008

    Excellent Vincent. Glad to have helped out. No chance of an upgrade with your rating to FixYa. The rating system is pretty tough to get ahead on, and a Helpful actual detracts from my overall rating. I did(and always will) put a big effort in for you:) Cheers



    regards

    robotek

  • Graeme Ross
    Graeme Ross Nov 07, 2008

    Hi Vincent



    The tuning gang should not be difficult to move. It will have dried grease in the bushes supporting the shaft. if you can get penetrating oil to make its way into the the bearing, then it should cure the problem. Cleaning out the dried grease once you have some easy movement back into the gang may allow for operation into the future. Taking the pulley off to do this work is advisable in the manner I indicated earlier. Using a solvent like acetone, or alcohol to help break down the hardened grease may also help. Be careful of plastic parts with acetone also, it can melt alot of things :) Be wary of over tightening the screw into the collet of the plastic pulley. It may split or damage it beyond repair.



    regards

    robotek

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

Tip

Solution for the stability problem


GE and RCA SR-3 production suffers from an ill-advised change in tuning potentiometer. It causes the tuning to be unstable - the radio is almost unusable due to difficulty in tuning to stations and the radio has difficulty staying on stations.

The value of the pot is a bit unusual - 300k. I have found that a 500k pot, with 470 fixed resistors across each leg (low to middle, middle to high) allows the radio to tune the entire AM and FM bands, although dial calibration is really bad. The tuning voltage high and low pots will need to be adjusted at the very least, and the whole front end will probably need re-alignment.

I have modified at least a half a dozen of these radios this way, Fry's has an appropriate pot but the shaft is aluminum and needs to be machined. The radios are as stable as early production SR-3's, and are fine DX units.

The FM section can also benefit greatly from the narrow ceramic filter modification. I can routinely use the radio for stations over 100 miles away after the modification.

on Jan 14, 2009 | GE Superadio III AM/FM

1 Answer

I have a ford fiesta Zetec s and i have a aftermarket stereo wired up but when i turn it on it lights up but no sound please help?


in all modes. new aftermarket or 1970.
the radio will play with radio , cassette, CD, or USB stick and even AUX to the iphone.
so are all dead? if yes,
that means.
the power pin is dead, (lights up does that mean dial lamps or you can see station tuning work, if just back lights that is not radio power
that is the park lights power.
the radio has power wire, main, that must be 12vdc or the radio and amp will be dead.
missing inline fuse. or blown?
most radios have 3 power pins and 1 ground
1: 12vdc power. main
2: 12vdc park lamp circuit, for dial.
3: memory.
4 : ground wire.
take all 4 to work right.
takes 1 and 4 to play music. at say USB port.

Jun 24, 2014 | Cars & Trucks

1 Answer

How to operate remote for AIWA NSC.5333


To check for a properly working remote do the following:
Get an AM radio and tune it to around 600 on the dial. Then take the suspect remote and push each button. Every button that works will result in a beeping sound coming from the radio - you can even fine tune the radio for loudest beep. This will identify all working and non working buttons. For non working buttons open remote and clean contacts on board and buttons with swab moistened in alcohol. Or try rubbing pencil graphite on the board contacts and bottom of remote buttons. Sometimes a small piece of aluminum foil inserted into the remote button depression will do the trick. Good luck!

Feb 23, 2014 | Aiwa Televison & Video

1 Answer

2001 Toyota solara radio dead


why not say what works on radio.
stock radio?
park lamps ,dead , i bet not
all other lamps dead.(dials, etc)?
no sound only?
or tunes stations , i see it tune, scan works but sound is dead
post that, and the operators guide , shows where the RADIO fuse is
mostly in the cab fuse box.
inlines are aftermarket radios' not stock.

does it ask for CODE?
if yes ,the radio codes if not backed is a show stopper
dealer only fix. (big secret) or any certified, lock smith
see my 25posts here on this forum under radio codes
omg, 300,000 hits.
paste this in to the google search box and magic happens.
called a "site search."

radio code toyota site:http://www.fixya.com

Jan 11, 2014 | Toyota Cars & Trucks

1 Answer

Tuning dial has come adrift


Hi,

The things that come loose!!!

You could try one of the following:

1 Take your radio to a radio workshop, and see if they can spare a part to suit.

2 Take it to your nearest Radioshack or similar store and see if they have a part for it.

3 If all else fails, you could superglue the knob on, but that's only the last resort.


I hope I have answered your query.

Cheers,
Peter

Jul 06, 2012 | Yaesu FT-857D transceiver

1 Answer

I can't find a dial or tuning knob to changestations on the radio


This boombox has digital tuning. Look at the pushbuttons on top. You'll find a pair for volume up and down and another pair for tuning up and down.

Mar 05, 2009 | RCA RCD158 Boombox

1 Answer

Tube radio tuning thread slipping


The dial cord may will likely need replacement, good luck finding anyone who can do it. There are some chemicals ("non-slip" from GC) that might be applied to the cord at the dial or at the tuning capacitor, but I would recommend that this be done by a tech.

Aug 23, 2008 | Cobra 29 WX NW ST 40-Channels Base CB...

Not finding what you are looking for?
Audio Players & Recorders Logo

Related Topics:

320 people viewed this question

Ask a Question

Usually answered in minutes!

Top Audio Players & Recorders Experts

kakima

Level 3 Expert

102366 Answers

 Grubhead
Grubhead

Level 3 Expert

4943 Answers

The Knight
The Knight

Level 3 Expert

73086 Answers

Are you an Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...