[TechAssist] RCA Chassis CTC169BG2 No Power

  
> Hey Guys, 

Need some help w/ this one. Here's how it goes, Set came in with 
no power and loses color Intermit complaint. looked around and did'nt find 
anything out of the ordinary. I replaced the three caps in chopper 
curcuit(c4102,c4104,c4108) was also missing vcc run voltage at pin 16 of 
u4101, changed it too. re-assembled and set came up. unit was running good 
all voltages seem to be good with the exeption of cr4102 was quite a bit 
low. still had the intermit color. when changing channels it take about 1 
second to have colorand accationally the pic would go to b+w. also then the 
set would shut down losing 200v.. At pin 16 of u4101 still had runvcc v but 
missing3v at cathode of cr4102. even when the set was running the voltage at

cr4102 is very low/about 1.5v. this is supposed to be 3vdc? The set shut 
down and now will not power up at all. Have 170 @ collector of q4101 and 12v

at pin 16 of u4101. missng 200v from pin 10 of fly and checked r4703. 
checked pin 16 on ICu1001 for 5.7vdc and is missing, checked Q2906 it was 
good but i changed it anyway with ECG288. Still didn't fix. Have 180v at 
collector of Q4402 and cr4401. 
Changed horizonal retrace cap c4401 and changed c4402 and cr4403. 
CAN ANYONE HELP WITH THIS??? I'm Going outa my mind. 

TIA 
Mike Barnett 

 
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>  Get It Fixed At
>  Rochester Electronics
>  630 West Ridge Rd.
>  Rochester, NY 14615
>  716.663.6870
>  www.RochesterElectronicsRepair.com
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Get It Fixed At
Rochester Electronics
630 West Ridge Rd.
Rochester, NY 14615
716.663.6870
www.RochesterElectronicsRepair.com





_______________________________________________________
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http://www.bluemountain.com/giftcenter/


*****************************************
Help make your TechAssist online repair tips 
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