Zenith SMS1943S problem.


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Zenith SMS1943S problem.

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frankjc
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Aug 10, 2007, 11:03 PM

Post #1 of 12 (2294 views)
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Zenith SMS1943S problem.	Can't Post

I have yet ANOTHER tv problem. I have a Zenith, model sms1943s, and the picture is gone. It is just a colored line across the middle of the screen, about 1/8 of an inch thick.
Any ideas? Thanks.

Paulpablo
Enthusiast

Aug 10, 2007, 11:23 PM

Post #2 of 12 (2290 views)
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Re: [frankjc] Zenith SMS1943S problem. [In reply to]	Can't Post

That is a 9-1457-01 main module and you will need to replace C2100 and IC2100.

frankjc
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Aug 11, 2007, 4:57 PM

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Re: [Paulpablo] Zenith SMS1943S problem. [In reply to]	Can't Post

Not knowing what that means, it sounds like an expensive repair. Is it worth doing?

Paulpablo
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Aug 11, 2007, 6:46 PM

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Re: [frankjc] Zenith SMS1943S problem. [In reply to]	Can't Post

It is a 19 inch TV and probably not worth it!

mel
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Aug 11, 2007, 11:27 PM

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Re: [frankjc] Zenith SMS1943S problem. [In reply to]	Can't Post

I have found that quite often, R3209 which is a 2.2 ohm fusible resistor supplying B+ to the vertical IC will open for some unknown reason. If you can do the work yourself, including changing the IC and Cap if necessary, it should be a relatively inexpensive indeavor.

frankjc
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Aug 11, 2007, 11:32 PM

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Re: [mel] Zenith SMS1943S problem. [In reply to]	Can't Post

I can probably do the work myself. I have very little experience with TVs, but I have built and repaired guitars, stompboxes, and amplifiers.

frankjc
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Aug 13, 2007, 1:55 AM

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Re: [mel] Zenith SMS1943S problem. [In reply to]	Can't Post

That's exactly what is wrong. Problem now is that I don't have the right resistor to fix it. I temporarilly put in a carbon comp resistor, and the picture came back. I did not leave that resistor in there, That was strictly for test purposes only.
Thanks.

(This post was edited by frankjc on Aug 13, 2007, 2:40 AM)

mel
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Aug 13, 2007, 9:30 PM

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Re: [frankjc] Zenith SMS1943S problem. [In reply to]	Can't Post

I've probably got one in an old chassis in my boneyard. If you want to send me your address in a private message, I'll send you one.

terminator
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Aug 13, 2007, 10:32 PM

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Re: [frankjc] Zenith SMS1943S problem. [In reply to]	Can't Post

19 inch television probley not worth it! just buy a new television or go to a theift store and get a good television from there.i have a 1984 rca console television and its in good shape.

frankjc
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Aug 14, 2007, 12:20 PM

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Re: [mel] Zenith SMS1943S problem. [In reply to]	Can't Post

In Reply To

I've probably got one in an old chassis in my boneyard. If you want to send me your address in a private message, I'll send you one.

Thanks Mel, I will let you know on that. I think I might have found some locally though. These were marked "flameproof resistors", the kid at the store told me these are "regular resistors", and that I shouldn't use them. Also, are they supposed to be 1/4 or 1/2 watt?

terminator
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Aug 15, 2007, 7:27 PM

Post #11 of 12 (2202 views)
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Re: [frankjc] Zenith SMS1943S problem. [In reply to]	Can't Post

they are suppose to be 1/4 watts.

rrobor
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Aug 18, 2007, 11:26 AM

Post #12 of 12 (2183 views)
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Re: [frankjc] Zenith SMS1943S problem. [In reply to]	Can't Post

If this is, as stated feeding the vertical IC the minimum it will be is �W. It has to be flame proof. If the TV was involved in any incedent and it was found you changed that resistor and didnt use a safety, you could be in all sorts of strife. Looking at several diagrams lots have a 0.68 ohm at 1W, being 2,2 ohm the wattage expended within the resistor is greater. It also depends where the resistor is. if its on the AC side of the diode it would be 1W on the DC side it could be �W. It is not �W

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