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| sws |
 Posted: Thu Jun 01, 2006 12:46 pm Post subject: zenith sy3272dt 32" |
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| i have this box and it will not power up. it has alot of burnt and mia parts on the ac power section of the board . i need help to find a hole board or how to repair it cost effective. ?what is a deflection transformer and can i unstall with just a gun. ? the tv is to big to take to the repair shop ( can't afford a house service) but the board fits in a folder. |
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| Guest |
| Posted: Sat Apr 08, 2006 12:46 am Post subject: |
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| Anonymous wrote: | | changed out the ic's, put it all back together, and it burnt the resistors again. need some help to find out what is wrong---thanks |
I too had the same problem with the convergence board so i got two new stk's and the resistors still burned open. I bought a used convergence board and that fixed it. There must have been something wrong in the other IC's on the board. |
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| Troy |
| Posted: Sat Aug 27, 2005 7:11 pm Post subject: Re: 50" zenith tv convergance issue |
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| riverdale wrote: | | I have a 50" zenith television that i just replaced the hv splitter and focus block on. Originally, all i had was sound,but no picture. after replacing the splitter and focus block, i now have video, but a very bad convergance problem. I removed the convergance module #9-1690, and found the (4) 1 ohm reistors on this board to be open. I replaced all four resistors and turned the set on again. The resistors began to smoke again. I am trying to decide if the two stk393-110 ic's are bad, or if i need to do some other troubleshooting??--any help is appreciated. As a side note, when i first installed the new hv/focus assembly, the connector on the grey and black wires that go to the power supply was screwed up, and the grey wire was not on the pin. This caused the blue gun not to work. I found it loose, connected it, and the blue started working, so all i really have now is a convergance problem. Did not know if this would have hurt something else?? Also, i can not make the user convergance menu do anything. it says to adjust using arrows, but they do not move the lines.---All input is helpful--thansk again | I have a zenith doing the EXACT same thing. replaced board at a shop worked for a while then one day bowed image top and bottom. Did you figure it out? |
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| Guest |
| Posted: Fri Mar 25, 2005 1:10 am Post subject: |
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| scratch that.---i found that a fuse had finally blown, so i dont know yet wether the fuses blow with the hv undone or not.--thanks guys |
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| riverdale |
| Posted: Thu Mar 24, 2005 10:08 pm Post subject: |
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| alright guys. here is the latest. I undid the flyback from the splitter, and stuck it in a coke bottle. Turned on the t.v., and none of the resistors blow. Do you think that focus block could be bad???---let me know your thoughts. as soon as i hook up the h.v., the 1 ohm resistors toast themselves. |
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| riverdale |
| Posted: Tue Mar 22, 2005 4:24 pm Post subject: |
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| CHECK YOUR PM |
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| raytel |
| Posted: Tue Mar 22, 2005 2:49 am Post subject: conv 9-1690 |
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Just fixed one of those 1690..service notes state replace ic s .. I would check r4151 1k off pin 3 of plug 3c8 first that causes conv to be way off & no control.. check 1 ohm res..all of them check for 26v supply from 9-1674 ck. cr3419 & fx3460 5a..
on 9-1674 you might wont to check r3244 820 ohm & r3243 110k ohm located between fly & that upright pannel hard to find..
note r3243 110k will cause bowed top and bot...little or no pix
Hope this helps I got all service notes on this turkey..
raytel petersburg wv  |
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| Guest |
| Posted: Mon Mar 21, 2005 10:46 pm Post subject: |
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| changed out the ic's, put it all back together, and it burnt the resistors again. need some help to find out what is wrong---thanks |
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| alltronix |
| Posted: Wed Mar 16, 2005 8:15 pm Post subject: |
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| It is possible there was a power surge caused when the splitter failed. Be sure to check for open resistors on your convergence bd. |
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| Guest |
| Posted: Wed Mar 16, 2005 4:13 pm Post subject: |
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| do you think they could have burned up when the hv splitter failed?? i am just thinking it is weird that it had a good picture, the hv splitter failed, i fixed it, and now the convergance is way off. i am going to try some ic's, but i just want to make sure nothing else is wrong that will burn them out again.--thanks again |
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