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Old 04-12-2017, 08:23 AM
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1978 Sinclair mtv1 tv

Hi all, yet another project this time a Sinclair but was wondering if anyone has a schematic in English for this set or any info as to what is known to go bad or components that should be changed to get it up and running. Don't know if this is correct but this set takes a 12 volt ac adapter or 6 volts in battery power ? It is an electrostatic set so I'm sure the hv caps will be bad but I don't know if the components like caps have the values on them in English rather then German . Any help would be appreciated . Thanks.

Last edited by timmy; 04-12-2017 at 08:38 AM.
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Old 04-12-2017, 09:07 AM
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Having owned German and Japanese made radios and TVs I can tell you that the component labels will read the same in both languages...Except for pot functions.
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Old 04-12-2017, 11:42 AM
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Timmy,

I have this set. It's been reliable. If the front bezel is not cracked be careful! Here is a tutorial. https://visions4netjournal.com/viewers-televisions/ Most problems have been the battery leaking on the traces.

I have a PDF service manual for the MTV1 send me a PM.

Edit: 12 volt, center polarity. I have to double check on that.
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Old 04-12-2017, 12:52 PM
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Old 04-12-2017, 01:41 PM
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Got it. Send me your email if you want the service manual.
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Old 04-14-2017, 08:41 AM
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Quote:
Originally Posted by etype2 View Post
Got it. Send me your email if you want the service manual.
Ok got it thankyou much.
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Old 04-16-2017, 11:48 AM
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Ok got new ni cads in place but turn it on I get nothing almost as though there are no battery's, I don't know a thing about these little sets, any hints. Traces checked for continuity and good.
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Old 04-16-2017, 01:39 PM
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Bought my Sinclair MTV-1 new back in 1978 or so. I still have the original box and all the accessories w/user manual. Haven't turned it on in years.

-Steve D.
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Old 04-17-2017, 06:51 AM
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Ok I got the little set working was a bad solder joint but I had the misfortune of accidently having a wire from the IF touch the vert size and horiz and sparked so now pic, sound, and deflection is gone so the transistors I can get and for the IF I'm thinking if I get deflection back maybe I can inject the ant to another spot to get the signal back , I don't know. There is an IC chip for the deflection and cannot find an equivalent by the number on it so does anyone have a way to find this chip or an IC book for subs. The chip reads, st30101 and under that is 7718 it's a 16 pin. The chip may be good as the the transistor would probably go first. But wanted to have a line on another chip just in case it's bad.

Last edited by timmy; 04-17-2017 at 07:43 AM.
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Old 04-20-2017, 08:40 PM
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I have no good suggestions for finding the chip, but you could find a donor set on eBay.
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