[TechAssist] Re: Mitsubishi Md# CS35601 Pip Bypass 930B552 012
- From: Gerald Gann <alpha21century@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 10 Jan 2005 16:11:04 -0800 (PST)
Bill I saved this awhile back. Hope it helps
Jerry
Alpha 21 Electronics
Granite City, IL 62040
Ph. 618-452-8620
www.alpha21century@xxxxxxxxxxxxx
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MITSUBISHI #PIP BYPASS 3
Solution to bypass the un-bypassable module 05 Version "930b552005"
Jeff Stielau : Shoreline Electronics Repair
Found this one the sci.electronics.repair forum....did not try it yet
but may be a good fix !
What we've done for this model is to put a 2.7k and 4.7k resistor in
series with the (-) leg of the 47uf cap to ground and tap the junction of the
2 resistors and run that to pin 11.
A simple voltage divider.
Did a lot of experimenting with potentiometers to determine the values
needed.
You could always use a 10k pot to do this and would have something that
is adjustable.
You will need about 1.7v p-p at pin 11 when done instead of around 2.7v
p-p that you get when simply bypassing with that 47uf cap.
William Rayburn <premtech@xxxxxxxxxxxxxx> wrote:Hi Guys,
Anyone have a schematic or drawing for the unusual pip bypass procedure for the
above Mits? I know it has something to do with building a voltage divider to
lower pin 11 from 2.7 vpp to 1.7 vpp..
Bill
William H. Rayburn, CET
NESDA Member
Premium Technologies
PO Box 442
Long Beach, Wa. 98631
(360) 642-4993
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