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Silver Radio - Model 8S - 45 (All Transistor) MW / SW1 / SW2 - Threading Radio Tuner Dial & Volume Potentiometer
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Return to top of page · Post #: 16 · Written at 8:26:59 PM on 8 May 2020.
	Marcc Location: Wangaratta, VIC Member since 21 February 2009 Member #: 438 Postcount: 5254
Being transistor, I see no reason for getting an accurate reading whilst its in circuit. The fact that there are different readings is the the coupling caps are often electrolytic. I do not like using conventional Ohm meters in transistorised stuff as a reverse polarity can do damage. That also applies to low ohms per volt meters. The centre (sweeper) does not look like a good joint. I would with perhaps the aid of solder wick remove it. Those two holes near the drum look like they may have had something in them?

Return to top of page · Post #: 17 · Written at 8:27:53 PM on 8 May 2020.
	Tedantique Location: Hawthorn, VIC Member since 8 May 2020 Member #: 2417 Postcount: 10
Thanks GTC for the suggestion of taking the D shaft on to new pot. I'll get some of this contact cleaner tomorrow from jaycar and give it a go cleaning first before dismantling. https://www.jaycar.com.au/electronic-cleaning-solvent-spray-can/p/NA1004

Return to top of page · Post #: 18 · Written at 8:29:50 PM on 8 May 2020.
	Tedantique Location: Hawthorn, VIC Member since 8 May 2020 Member #: 2417 Postcount: 10
Thanks GTC for the suggestion of the old D shaft on to a new pot. I'll get some of this contact cleaner from jaycar tomorrow and try cleaning the pot before dismantling https://www.jaycar.com.au/electronic-cleaning-solvent-spray-can/p/NA1004

Return to top of page · Post #: 19 · Written at 8:33:26 PM on 8 May 2020.
	Tedantique Location: Hawthorn, VIC Member since 8 May 2020 Member #: 2417 Postcount: 10
Thanks GTC for the suggestion of the old D shaft on to a new pot. I'll get some electrical contact cleaner from jaycar tomorrow and give cleaning a try before dismantling the pot https://www.jaycar.com.au/electronic-cleaning-solvent-spray-can/p/NA1004 Thanks Ted

Return to top of page · Post #: 20 · Written at 8:40:19 PM on 8 May 2020.
	Tedantique Location: Hawthorn, VIC Member since 8 May 2020 Member #: 2417 Postcount: 10
Sorry guys, just posted the same thing 3 times. Thanks Marc about the heads up about the resistance reading, I didnt know about that.

Return to top of page · Post #: 21 · Written at 9:12:48 PM on 8 May 2020.
	GTC Location: Sydney, NSW Member since 28 January 2011 Member #: 823 Postcount: 6687
Yes, the resistance test needs to be done out of circuit.

Return to top of page · Post #: 22 · Written at 12:38:59 AM on 9 May 2020.
	Marcc Location: Wangaratta, VIC Member since 21 February 2009 Member #: 438 Postcount: 5254
Learning the technology is part of the process of learning how to fix. With the solid state stuff, you cannot get away with many of the things you do with valve stuff. If you don't ask you will never learn and if you don't know how to do it, ask! That dial cord spring has passed its use by date. Some of the engineering suppliers may have them that small, that's where I get the ones for the valve radios. Marc

Return to top of page · Post #: 23 · Written at 6:03:54 PM on 9 May 2020.
	Ian Robertson Location: Belrose, NSW Member since 31 December 2015 Member #: 1844 Postcount: 2371
I got my spring collection from Aldi! Fibre washers too.

Return to top of page · Post #: 24 · Written at 10:07:14 AM on 10 May 2020.
	Irext Location: Werribee South, VIC Member since 30 September 2016 Member #: 1981 Postcount: 470
Those boxes of assorted springs/washers/o rings etc from Aldi are invaluable. Every time I go to Aldi I come out with something useful.

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