Star Tech Journal

Issue: 1993-September - Vol 15 Issue 7

STAR*TECH Journal
B
September 1993
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m
September 1993
STAR*TECH Journal
MIGHTY POWER
REVISITED
William Cheng
Mighty Power Electronic Co.
Taiwan, R.O.C.
We have read your article
about our power supply titled
"Who's Kidding Who" in the
July, 1993 issue. We would
like to take the opportunity to
express several of our com-
ments in this article.
SUBJECT
Re the "Who's Kidding Who" in
the
July
issue
of
STM*TECH Journal.
RELIABILITY
We won't dispute that it might
be the case that four out of the
twelve of our power supplies
used in A-1 Amusements'
game machines failed. But,
the fact is that up to the
present time the average de-
fective rate of the 1VIP-3089C,
UL approved, 12 amp power
supply is only 0.87%, much
less than 1 %.
RETURN RATE
In the June issue we stated
that only 36 pieces failed
among the 30,000 units re-
leased since July 1992. This
statement was made com-
__. pletely according to our statis-
tics at the end of this April
when we wrote to the
STAR,fiECH Journal. Until
now, 259 pieces out of the
30,000 pieces have been docu-
mented though, well within
our target of 0.5%.
FuRTHER IMPROVEMENT ON THE
MP-3089C
With minute investigation of
the defective units we have
found about 90% were caused
by failed main filtered capaci-
tor 150 MFD/200V which is
made in Taiwan and, the fac-
tors causing the capacitor fail-
ure appear to be complicated-
rarely occuring but extremely
hard to completely prevent it.
This is perhaps because
Taiwan's high-voltage capaci-
tor production technology and
scale are not as mature as
Japan's. Based on this, we
have decided to adopt Japan-
made, higher-rated 220 MFD/
200V instead of the original
Taiwan-made 150 MFD/200V
at no extra charge on all future
production.
RESPONSIBILITY
Mighty Power has been consci-
entious and honorable and of-
fers a one-year guarantee on
all our products.Naturally, we
are supposed to take care of all
the defective units. Here, we
would like to take the opportu-
nity to urge all the Might
Power Supply users who have
the defective units to return
them all to the sources from
which you got them. Remem-
ber, it is your rights to get
100% good power supply from
the Mighty Power!
We trust that you will publish
our response in your next issue
so that the trade will know of
our reply. Thank you very
much.
Get A Quarter
Everv Time Someone
Uses The Phone.
• Adjustable Volume Control
• Extended Warranty Avail able
• FCC/UL Approved
• Attractive Gray Color
Fax 713 550- 1028
G-'f'Ei.'
713-550-5592

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