[TechAssist] magnavox tv model no#RS2749c401 chassis 27z1 update ..fixed!

  • From: "joe weaver" <weavel@xxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Wed, 3 Oct 2001 12:25:35 -0400

hello everyone,
this is a magnavox tv..model no#RS2749c401 chassis 27z1
set comes on with red screen /w retrace lines then 10 seconds shutsdown.. i
have checked  q650,q651,q652  red,green,blue drivers and q660 luma
buffer..all check good..
on crt board i have checked r1 through r16  q1,q2.q3 show 13.5 volts on
emitters which is normal.. c1 thru c4 is good..
i resoldered j1/j2/j3 and crt socket complete.. has anyone any
tips on this tv?? any help would be appreciated..
thank you...joe

thanks for all the replies on this tv..here is what ive got so far.
the components i have checked on crt board..
q1  collector voltage  15.3 v  red amp
q2  collector voltage  106 v   green amp
q3  collector voltage   79.5 v  blue amp
these voltages were taken with crt board removed..note: set did not shut
down.. i do not have a listing to check tube in my
sencore cr70 book.. thanks...joe
------------------------------------------------------
well this bugger is fixed..but not sure what i did..all i did was to remove
q1 red output on crt board to remove load from circuit..tv would not fire up
so i put it back in and turned set on to take voltages readings..and voila!!
all voltages are normal and set has good raster and picture...it sure has me
puzzled..thanks to everyone for their assistance...
joe



william j.weaver KG8CJ
weavers electronics
268 w.water st.
oak harbor,ohio 43449
1-419-898-4129  phone
1-419-898-5054   fax
weavel@xxxxxxxx
www.cros.net/weavel
"God Bless America"

Help make your TechAssist online repair tips 
database better!  Submit your fixes here: 
http://www.circuitwork.com/techassist/tip/#tips
To unsubscribe write to:
techassist-request@xxxxxxxxxxxxx 
with  unsubscribe  in the subject line.

Other related posts:

  • » [TechAssist] magnavox tv model no#RS2749c401 chassis 27z1 update ..fixed!