Post by lampadinac on Mar 13, 2003 17:08:42 GMT 1
> May y have a picture components identification of the modification descripted below,
because i can't identify on my comcrypt 4000 IC801, IC301, testpoint T47 and
trimmer R219 on my printed circuit i have just the reference constructor id
that start with 7 and are 4 digit .
>
> Thanks a lot.
>
>
> I tried the modification and it's ok.
> When the modifcation is done, the decoder lose audio sometimes. But now(2
hours after modification) everything is ok, audio never lost. I can mistake,
however.
> What you have to do is relatively simple:
> 1) Your Comcrypt 4000 rev. 1.3 must flash on its display "E0", so you have
to restore the original status of your decoder if you made any modification.
> 2) locate IC801(use the picture to localize this component):
> solder pin 1 and 2 together
> between pin 3 and 4 put a resistance of 15 Ohm (brown-green-black, 1/4
watt seem to be good).
> 3) Locate the (big) delta chip:
> release pin 18.
> cut the copper line to pin 18 and reroute this line with a wire to pin 33
of the delta chip (same chip).
> solder pin 16 and pin 17 together.
> make a wire route from pin 23 to testpoint T47 (is located next to the
channal down button ).
> 4) Locate IC301(use the picture to localize this component):
> Locate trimmer R219 (so on topside to locate at the left):
> take the pin that's connected to the smd resistance R226 with a RESISTANCE
OF 2K2 OHM(1/4 watt seem to be good) toward pin 10 of IC301.
> solder pin 8 and 9 together
> ***
> Video(with this modification) is less good than of golftouch.nl, but with
this modification there's audio and altogether is very good.
> To have the picture of the modification send me an e-mail.
>
> Comcrypt 4000 rev. 1.3 is completely working.
>
