[TechAssist] Re: Mits CS-35FX1 pix rolling, tearing.
- From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 29 Jul 2003 15:06:59 -0500
Here are some possibilities:
Dark picture with lines
CHECK 220V SOURCE FROM PWR SUPPLY TRANSFORMER T905. IF LOW OR MISSING,
SUSPECT LEAKY/SHORTED C927 (47 UF 350V). LOCATED ON PCB-DEFL IN 220V POWER
SUPPLY OUTPUT CIRCUIT.
Could it be adjacent channel interference?
TO MINIMIZE ADJACENT CHANNEL INTERFERENCE APPLY THE FOLLOWING: A. REMOVE
L109 (0.68 UH COIL). B. CHANGE R105 FROM 330 OHM TO 680 OHM. C. CHANGE R106
FROM 18 OHM TO 68 OHM. NOTE: IN ADDITION TO THE PRECEDING CHANGES, PERFORM
SUBSEQUENT ADJUSTMENTS PER SERVICE MANUAL: A. VCO FREE RUN B. RF AGC C. AFT
* IF PRECEDING ADJUSTMENTS FAIL TO ACHIEVE ACCEPTABLE RESULTS, OVERALL VIF
ALIGNMENT IS REQUIRED
Or maybe even,
DARK PICTURE AND HAS REDUCED HORIZONTAL SWEEP.CHECK R552 (220 OHM 3W) ON PIN
4 OF T552.LOCATED ON THE DEFL-PCB.
There is no mention of a PIP module problem on this set that I saw.
**************************************************
Jim Myers
Since 1972
Telrad Electronic Services Co.
Fort Wayne, IN 46815
*************************************************
----- Original Message -----
From: "John @ Myers TV" <myerstv@xxxxxxxx>
To: "Tech-assist" <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, July 29, 2003 12:49 PM
Subject: [TechAssist] Mits CS-35FX1 pix rolling, tearing.
HI all,
I have a Mitsubishi model # CS-35FX1 that has low video level (ie rolling,
tearing, etc. )
It looks like a bad PIP module, except that this doesn't have the old module
that I'm used to. Does anyone have any ideas for quick fixes on this?
I'd like to avoid bringing this in.
John Myers
Myers TV Service Co. Since 1984
Alliance, OH
Voice: 330-821-6545
myerstv@xxxxxxxx
http://members.ebay.com/aboutme/tvguy07/
http://members.ebay.com/aboutme/threads_r_us/
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