[Heathkit] SB 102 - 7W Audio board resistors

[Carlos A. Archilla]

As far as I can tell, R304 (1k ohm, 7W) and R305 (2.5k ohm, 7W) link the 
power plug 300V B+ line to the voltage regulator V18 (OA2) tube.

On 4/26/2010 11:03 PM, Mike McCarty wrote:
> Carlos A Archilla wrote:
>    
>> Hello to the list:
>> I was lucky to find resitor (Part No. 3-15-7) frying about 5 minutes
>> after I turned the old SB 102 on. It is clear that the 1K ohm 7W
>> resistor must be replaced and maybe the 2.5K ohm 7W (3-16-7) resistor
>> next to it too.  But before I do.....is there anything I should check
>> other than the Power Supply 300V B+ line?  Any known source for
>> these.  Any help would be appreciated.
>>      
> I think you need to find out why they fried. Which parts are they
> in the schematic? There was too much current being drawn. You need
> to know why.
>
> Mike
>