[TechAssist] Re: FIXED Mitsubishi CS3520R Vertical problems need schematic.

       Thanks Bill and Ken and others that replied. After downloading the 
schematic we were able to track the parts to the power supply board mounted on 
the side of the cabinet. 
        Maybe I misunderstand but the tips sounded like the parts were on the 
same board as the vertical IC.  D909 and R917 checked good. We did find C928 
[1000uf@50V] and C914 [470uf@50V] both leaked out. The rest if the caps ESRed 
OK. Replacing C928 and C914 fixed the set.
  Jerry
  Alpha 21 Electronics
  Granite City, IL 62040
  618-452-8620
  alpha21century1234@xxxxxxxxxxxxx

Carol Rundle <brundle@xxxxxxxxxxxxx> wrote:  Check or replace c928 1000uf@50v, 
30v source pin 1 on PC conn, is voltage source for Vert. ic4e1 (la7838) pin 8 
27v., pin 13 26.4v. pin 1 9.4v ESR or replace c4e2 47u@25v, c4e4 100u@35v, c4e5 
100u@xxxxx c4e6 2200u@25v,, all lytics. use 105deg.
D4e1 zener is either RD10EB1 (10v.) or EQAO2-11D (11v) hth..

Bill
Bill'sTV
Sonora,Calif.




GERALD GANN wrote:
Ken thanks for the tips. But we looked again still no D909 and 

R917 also there is no L511 on this chassis. There is nothing on

this board diodes, resistors or anything starting with a 9. I

did find a coil L5E1 and it is no were near vertical IC also

vertical IC number is IC4E1 not IC401. I don?t know what to

tell you, it is model CS3520R not CS35203 as in WinSTIP. If

don?t get an answer by tomorrow afternoon on the free schematic

I will go ahead and download it from servicemanuals.net.

By the way how are you feeling? When I meet you in Ohio

you were not feeling too good. You can email me back privately

if you care to answer. 
Jerry
Alpha 21 Electronics
Granite City, IL 62040
618-452-8620
alpha21century1234@xxxxxxxxxxxxx


gulftech@xxxxxxxx wrote: Jerry,

Try this tip:
---------------------------------------------------------------
Text pasted from WinSTIPS 2.0
http://www.ServiceSoftware.com
---------------------------------------------------------------

MITSUBISHI CS35203 

Vertical No Vert Deflection

From Mitsubishi

Check 12v Supply At Vertical Ic401 Pin 1. If Missing, Suspect Open Coil
L511 (1000 Uh). Located On Pcb-Main At Ic401 Pin 1. Pt# 325c108070

---------------------------------------------------------------

Also, follow your +26v back to the flyback. Could be D909 is the
rectifier and R917 is the low-ohm resistor between the diode and the
vertical IC. Also, should find a 35-50 volt cap on the line. Can use an
NTE552 for D909. A good guess at R917 would be 1.2 ohm, 1 watt.

HTH,



Ken Smith
Gulf Technical Services
3034 Gulf Breeze Parkway
Gulf Breeze, FL 32563
850-934-8324 (Voice) 850-932-0819 (Fax)





On Tue, 27 Dec 2005 15:20:42 -0800 (PST) GERALD GANN
writes:
> Mitsubishi CS3520R Vertical problems need schematic.
> Changing vertical IC did not help. No 12 to 10volts on pin 1 
> only about 3volts. Also 26, 27volt line pulled way down. 
> I found some tips on T/A one said check D-4E1 at pin 1 on 
> vertical IC it checked good. The other tip said check D-909 and 
> R917. We couldn?t find either one of those anywhere.
> Hoping some one has the schematic in PDF they could send me 
> and maybe some other tips. I did find it on servicemanuals.net for 
> $23.99 for download but I like free better don?t you. Thanks 
> Jerry
> Alpha 21 Electronics
> Granite City, IL 62040
> 618-452-8620
> alpha21century1234@xxxxxxxxxxxxx
> 
> 
>
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Carol Rundle
brundle@xxxxxxxxxxxxx



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