[Amps] L4B Caution

[Jim Smith]

Thanks very much for the info, guys, both here and direct.  I note that 
in the McMaster-Carr catalogue that it is for indoor use only

73, Jim Smith	VE7FO

On 2013-07-25 23:43, Jim Smith wrote:
> What is glass tape and what is it used for?
>
> Jim Smith  VE7FO
>
> On 2013-07-25 10:32, Ed K0KL wrote:
>> I had a bad experience when working on an L4B for a pal. The bleeder
>> resistor mounting
>> scheme proved to be a little poor (unusual for Drake). When reinstalled,
>> one of the resistors
>> shorted to the mounting screw.
>> This bleeder is held in place by a screw that goes through the center of
>> the resistor. Mica slices
>> insulate the ends (chassis and screw head). Only thing is the resistor
>> arced through the ceramic
>> base material. So I used glass tape to insulated the screw on the
>> reinstalled components. This
>> provided better spacing to the center of the screw.
>> Note- I replaced the resistors, having the same thing reoccur. Only with
>> the use of the tape did
>> the thing calm down. Ordinary electrical tape won't work as it will melt
>> caused by the heat of
>> the resistors.
>>
>> Anyway, that was some time ago, the amp is going strong. Except for a
>> rather weak plate
>> transformer, this puppy will no doubt last several lifetimes.
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>
>