I've only had a cursory look at it so far but I recently acquired a 2340 as 
part of a deal to transfer a musician's home studio recordings,  and 
interestingly the Teac also has problems specifically in the repro chains. 
There is no trouble with service information as the 2340 Service Manual is 
quite detailed and is available on "Hi Fi engine". Alss I recall, the 2340 
uses all discrete transistors in the audio paths so there shouldnt be any 
problems sourcing parts. Almost certainly the problems are  electrolytic cap 
or  transistor related, all probably inexpensive and freely available parts.

However, a downside of the machine is that the circuit boards are not 
unpluggable types but hard wired in, and fitted into a cramped space, so 
removing and refitting the relevent boards could be messy and very time 
consuming. It wouldnt be a job I'd necessarily warm to...

Tim Gillett
Western Australia

----- Original Message ----- 
From: "Mickey Clark" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, September 29, 2018 5:47 AM
Subject: Re: [ARSCLIST] TEAC A-2340 "white" noise

> Ben-Some components get microphonic - i.e. - they pick up vibration where 
> they shouldn't  - sometimes gently tapping suspected components with a 
> plastic pen might highlight any component that is faulty. You shouldn't 
> hear any effect unless there is something faulty. If there is a cold 
> solder joint, it might show up that way too-Mickey
> -----Original Message----- 
> From: Lou Judson
> Sent: Friday, September 28, 2018 1:20 PM
> To: [log in to unmask]
> Subject: Re: [ARSCLIST] TEAC A-2340 "white" noise
> Boards do not make noise. It might be a compoment on the board. Your 
> service person should be able to trace it!
> OR see the machines on ebay, the one for $149 has a motor problem, 
> probably has a board that works…
> <>
> 2 hours left, no bids yet!
> $149 is about one hour’s worth of a tech’s time!.
> <L>
> Lou Judson
> Intuitive Audio
> 415-883-2689
> On Sep 28, 2018, at 1:01 PM, 6295LARGE <[log in to unmask]> wrote:
>> Hi Lou
>> It's  steady state white noise.  What if it IS the board?
>> Regards,
>> Ben
>> On Fri, Sep 28, 2018 at 12:35 PM Lou Judson <[log in to unmask]> wrote:
>>> If you want a response, you should add it to the reply to field! :-)
>>> What sort of noise? Steady state white noise? Crackly irregular noise?
>>> Hard to believe he can’t trace it; at some point it is there and before
>>> that point it isn’t. Is it in playback, source monitor, or both? If on
>>> playback, it could be the source/tape switches, that happens on my Sony 
>>> 4
>>> track sometimes.
>>> I think - not sure - that a deck of that vintage can have compoments
>>> replaced on all the boards individually; not needing complete board
>>> replacement… and there are units on ebay for $149 to 600 which you could
>>> get as a parts donor…
>>> Best luck!
>>> <L>
>>> Lou Judson
>>> Intuitive Audio
>>> 415-883-2689
>>> On Sep 28, 2018, at 9:03 AM, 6295LARGE <[log in to unmask]> wrote:
>>>> Hello everybody.
>>>> I have a TEAC A-2340  which has a noise that my repair guy cannot fix.
>>> He's
>>>> been in the business for some 35 year, but cannot trace this noise to 
>>>> its
>>>> source.  He said it might be the board which no one can fix or replace.
>>>> Does that make sense?  Can anyone suggest a solution?
>>>> Thanks.
>>>> Ben Roth
>>>> P.S.  PLEASE RESPOND TO [log in to unmask]

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