dalegass@dalcsug.UUCP (Dale Gass) (08/22/87)
----------- "Garbage in, g~rb{g^? out.~`rr~" ----------
Today I was shopping around for AT's for people and found one of
the Turbo variety (6/11.5 MHz) and was suprised to here a hellish
high-pitched buzz coming out of the thing when running at 11.5 MHz.
No one else could (or would admit to) hearing it. Even the person
with me couldn't hear it. The sales people obviously wouldn't.
I would like to know if this is common among the Turbo AT's and what
the cause is. Am I a bat?
Seriously though, I couldn't work with one, is this common?
-Jeff Scrutton, by the graces of
-dalegass@dalcsug.uucpgeoffs@gssc.UUCP (Geoff Shapiro) (08/25/87)
In article <128@dalcsug.UUCP> dalegass@dalcsug.UUCP (Dale Gass) writes: > >Today I was shopping around for AT's for people and found one of >the Turbo variety (6/11.5 MHz) and was suprised to here a hellish >high-pitched buzz coming out of the thing when running at 11.5 MHz. >No one else could (or would admit to) hearing it. Even the person >with me couldn't hear it. The sales people obviously wouldn't. > >I would like to know if this is common among the Turbo AT's and what >the cause is. Am I a bat? I purchased a 6/10 MHz AT about 6 months ago. The power supply that came with the machine also had a high pitched sound at 10MHz and eventually one hot evening burnt out completely. The second power supply that was installed to replace the second had the same problem; the problem seemed to be worse when video memory (EGA) was being written to. I complained to the dealer about the second power supply and insisted he procure a 220-240W bona fide American power supply to replace the one that I had installed at the time. Being a good dealer (one who stands by his warranty, most do not, at least not willingly), he took my recommendations and I have not had a problem since (about 3 months now). I must conclude that the foreign power supplies that many of these AT clones come installed with do perform up to their full rated capacities of 200W. This becomes even more critical at the higher clock rate when the electronic circuits draw more current. If you buy a clone insist on a good power supply! Geoff Shapiro GSS (503) 641-2200
dick@plx.UUCP (Dick Flanagan) (08/26/87)
Summary: Expires: Sender: Followup-To: In article <503@gssc.UUCP> geoffs@gssc.UUCP (Geoff Shapiro) writes: >I purchased a 6/10 MHz AT about 6 months ago. The power supply that came with >the machine also had a high pitched sound at 10MHz [...] ^^^ ^ ^^^^ ^^^^^^^ ^^^^^ ^^ ^^^^^ Ohmigawd! You must have ears like trashcan lids and the broadcast stations must drive you absolutely bananas!!! *8-) *8-) -- Dick Flanagan, W6OLD Long Live Zero Print Control UUCP: ...!ucbvax!sun!plx!dick GEnie: FLANPavRo