On Dec 9, 4:19 pm, Sam Goldwasser wrote:
Steve writes:
On Sun, 9 Dec 2007 20:25:58 -0000, "N Cook"
wrote:

Steve wrote in message
news We have a blown Hastings VT-4B. The part is D3 as listed in
http://www.repairfaq.org/sam/vt46sch.gif
The original part number looks like V1301A1

I don't know exactly what technology that is, but it's function is a surge
suppressor. The unit will run if that part is removed.

Not this time, it isn't a surge suppressor. This unit uses the
varistor
as a pre-regulator of the AC input, and it might be intended to
conduct
even in the absence of a surge.
The part number was probably V130 LA1 (the LA series was from
Panasonic); modern equivalent seems to be ERZ-V27D201.

Radio Shack part #206-568 is close enough
http://www.radioshack.com/product/index.jsp?productId=2062574&cp