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Vintage Audio (record players, hi-fi etc) Amplifiers, speakers, gramophones and other audio equipment.

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Old 14th Oct 2019, 11:20 am   #1
Studio263
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Default JVC - tougher than the rest

If you read amplifier reviews in hi-fi magazines you will find lots of irrelevant guff about 'musicality' and 'inky black silences'. None of this really matters, the key parameter is 'does it still work after you've put it in a bath of water?'.

This 70s JVC does (see picture, all but a little bit of the back is under the waterline), it ponged of wee and this was the only was to make it usable in a domestic setting again. A good soak, a few hours by the heater and it was as good as gold again, just minus the smell.

Made in Japan: Sign of Quality.
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Old 14th Oct 2019, 11:35 am   #2
Edward Huggins
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Default Re: JVC - tougher than the rest

I hope you dried out that 13A mains plug too!
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Old 14th Oct 2019, 12:09 pm   #3
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Default Re: JVC - tougher than the rest

I sometimes add a little detergent, and maybe rinse with de-ionised water or propan-2-ol if it's something fussy. The water here is rather hard so it does stain a little.

I expect the sound will just wash over you now
Or maybe it will sound a little to clean ?

dc
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Old 14th Oct 2019, 12:16 pm   #4
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Default Re: JVC - tougher than the rest

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Originally Posted by dave cox View Post
I expect the sound will just wash over you now
Or maybe it will sound a little to clean ?
'almost completely transparent'.
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Old 14th Oct 2019, 12:20 pm   #5
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Default Re: JVC - tougher than the rest

That looks like it has suffered the "common domestic cat" problem.
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Old 14th Oct 2019, 12:22 pm   #6
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Default Re: JVC - tougher than the rest

In the early 80s I bought a Philips 1700 that someone had spilt coffee into. One PCB was covered in the dried brown goo and a resistor had burnt out, quite possibly as a result of the coffee. I tried all manner of solvents with luck, then I soaked the board in warm/hot water. Hey presto the coffee dissolved, leaving a perfectly clean board that I simply dried off overnight. I replaced the burnt out resistor and the set worked fine!
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Old 14th Oct 2019, 1:03 pm   #7
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Default Re: JVC - tougher than the rest

I hope that's de-ionised audiophile water you used...

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Old 14th Oct 2019, 2:07 pm   #8
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Default Re: JVC - tougher than the rest

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Originally Posted by Beobloke View Post
I hope that's de-ionised audiophile water you used...

Its actually drawn from the lake of tears of all of those who bought Leak, Quad, A&R, Cyrus, Cambridge etc, and then realised that they break down a lot more than the Japanese stuff does with no real world performance advantage.
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Old 14th Oct 2019, 2:10 pm   #9
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Default Re: JVC - tougher than the rest

Water beauty!

...Sorry, I'll get me coat...

Regards,
Paul
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Old 14th Oct 2019, 3:01 pm   #10
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Default Re: JVC - tougher than the rest

I see you've got it on soak test .....
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Old 14th Oct 2019, 3:08 pm   #11
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Default Re: JVC - tougher than the rest

Amplifier successfully de-ponged, but the bath now smells a bit...?

David
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Old 14th Oct 2019, 3:11 pm   #12
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Default Re: JVC - tougher than the rest

I've washed countless PCB's over the years, many of them main TV chassis.

Here is an RC getting the treatment with washup liquid and a soft brush. It comes up absolutely as good as new.

(I would make sure the mains tranny is fully dry and that could take many many hours)
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Old 14th Oct 2019, 4:26 pm   #13
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Default Re: JVC - tougher than the rest

I don't see any Radox [or scented candles] ..... sooooo don't expect any 'relaxing mood music' out of that particular rig!
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Old 14th Oct 2019, 4:41 pm   #14
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Default Re: JVC - tougher than the rest

Hope you put your little chap in for his bath at the same time. Don't like to think of all that water going to waste.

Wait a minute... just looked out of the window at all the 6" deep puddles
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Old 14th Oct 2019, 4:46 pm   #15
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Default Re: JVC - tougher than the rest

I've heard of someone on here once using a pressure washer on vintage TV chassis before, and they worked fine afterwards! I have personally chucked a complete CD player into an ultrasonic cleaner before, laser included, and it came out working just fine after drying it out for a few days.

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Old 14th Oct 2019, 4:47 pm   #16
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Default Re: JVC - tougher than the rest

Reminds me of the old days when PC keyboards were rather more-expensive, and dunking in the sink was the standard treatment when someone spilled coke/beer/coffee/tea/hot-chocolate/milk into one.

(In later years when you could get an new keyboard for a tenner we just issued a new keyboard rather than spending time trying to clean-up those which got gunged).
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Old 14th Oct 2019, 4:56 pm   #17
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Default Re: JVC - tougher than the rest

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Originally Posted by Mooly View Post
(I would make sure the mains tranny is fully dry and that could take many many hours)
No need here, like a lot of Japanese equipment this unit is full tropicalised, including resin impregnation for the mains transformer. It is designed to be reliable, even in humid climates.
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Old 14th Oct 2019, 4:58 pm   #18
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Default Re: JVC - tougher than the rest

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Hope you put your little chap in for his bath at the same time.
Actually it was the water that he'd had his bath in first. He's quite used to there being parts of TV sets and audio gear in the queue after him, but never a complete unit. He did ask about that...
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Old 14th Oct 2019, 5:02 pm   #19
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Default Re: JVC - tougher than the rest

Quote:
Originally Posted by Studio263 View Post
Quote:
Originally Posted by Beobloke View Post
I hope that's de-ionised audiophile water you used...

Its actually drawn from the lake of tears of all of those who bought Leak, Quad, A&R, Cyrus, Cambridge etc, and then realised that they break down a lot more than the Japanese stuff does with no real world performance advantage.
I have nothing against the brands that you mention, in fact I've been a lifelong Quad fan and I have a 44/405.2 set up myself. However, since I started collecting vintage hifi around six years ago, the quality and durability of Japanese hifi from the 70s and early 80s is amazing. Unlike my Quad where all the electrolytic caps had leaked and/or gone leaky, not to mention resistors that burnt out due to being of insufficient wattage, these Japanese units just go on working. And, they look great with their brushed aluminium fascias, lovely turned knobs, wooden side panels and glowing scales etc., unlike the plain utility style of much of the UK stuff. In fairness, the later Quad stuff is both 'plain' and good looking in an understated way, I get that. Other UK manufacturers made amps and tuners that looked like they came from different manufacturers. I'm NOT anti UK hifi, I just think that the previously mentioned era Japanese kit was top notch, and more and more people are realising that now. When I began work as an apprentice electronics engineer in the early 70s, talk was often about hifi and so many of the older guys would refer Japanese hifi as "Jap" followed by a single word that rhymed with it. Not true, no way!
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Old 14th Oct 2019, 5:54 pm   #20
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Default Re: JVC - tougher than the rest

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I don't see any Radox [or scented candles] ..... sooooo don't expect any 'relaxing mood music' out of that particular rig!
On reflection - anticipate ..... Handle's 'Water Music' !!
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