[Kenwood] TS940 power supply problem?

2002年7月30日 17:08:16 EDT

In a message dated 7/30/02 12:56:11 PM Eastern Daylight Time, 
[email protected] writes:
> From the postings I've read, it appears that there are a lot of '940s with 
> this
> power supply problem. Mine had the same thing. Just one day - poof - and 
> the
> smell of burnt electronics filled the air. I received a bag of parts that 
> they
> replaced, included was a transistor (I assume it was a pass transistor).
>> I wonder why '940s are having this power supply problem now?
>> Its a great rig, but I wouldn't buy one used again (I purchased mine a 
year 
> ago
> from AES). Seems like there's some flaw in the power supply that's 
rearing 
> its
> ugly head now. Hopefully with this fix, it'll be good many years to come.
>
Hello all --------- 
Its not all that surprising that PS problems in older Kenwoods (and other 
rice boxes) are starting to surface. Most of my rigs are boatanchors 
(Collins, EF Johnson, Heathkit,etc) and that also includes the Kenwoods 
------ 520, 830s and accessories. In general, most of the older supplies are 
showing their age with electrolytics that are acting more as resistors than 
capacitors. Rule of thumb here is to perform some preventive maintenance and 
replace the aging components before they destroy themselves. Its not too 
difficult to find fresh, new electrolytics and replacement is straightforward 
in most cases. Look for aging bleeder resistors while you have the gear 
apart. A little preventive maintenance might save you big $$,ドル months of 
waiting for its return, and extend the useful life of the rig by years.
Just a comment....... Your individual mileage may vary.
73 de W4MIL
Chuck