My first rescue, Sharp 13MM17

[Davros]

So Ive rescued my first CRT. Its final destination will be my Shop and I plan on using it regurally.

I've repaired and restored Radios and Stereos in the past, and as this is my first TV have migrated over from Audio to Video Karma for advice.

If this was an audio piece I would recap the power supply, and let it run as is, as it appears to work just fine, however I dont know this items history as it was a curb find. (Bulk pickup day)

Besides the 2 large capacitors (that I presume are power supply) is there anything I should do preemptively as it will get regular use?

Any advice?

Marc

[Davros]

Photos for reference

[zenith2134]

Yes, that is a common model but makes a great picture. An example of a cheap set which really held up well over the years. Made in Malaysia, 1987-1988.

There was a chassis revision at the end of the run which used a different flyback---the flyback was the weak point of this chassis.

I've owned at least 3 examples of this set, including one from a fellow VKer where he built a VHS deck into the cabinet.

The CRT is either sourced from Goldstar or Toshiba. I have seen both in this model.

I wouldn't worry much about those filter capacitors unless they're swollen or leaky. I'd be more concerned about going over all the solder joints and reflowing any marginal ones. High heat areas would be around the regulator, horizontal out, and the flyback. Also check the neckboard and touch up the grayscale, and clean the rgb pots there. Standard practice for this era. Then focus it up and enjoy it. They last.

[Davros]

Thanks for the starting point!

I'll plan on a good blowing out, look for bad solder joints, and clean the pots with deoxit.

Is there any way to see what flyback I have, and anything I can do to protect it as much as possible?

I'm not 100% sure, but if I was a betting man I'd say the flyback was either replaced or was worked on at some point. Its the only item on the board with dried up flux around the solder joints. There's not a trace anywhere buy the flyback.

Also, are there any repair manuals for this other than the Sams? If ai need one, ill get it, but if not even better.

Marc

[zenith2134]

I'm not surprised that it's been replaced. The 19" version was even harder on the flyback; it may have been the same part as the 13" (certainly the same size transformer), and was further stressed.

My 13MM17 is in storage now, and I see service manuals for this model online.

Not sure why you'd really need it except out of sheer curiosity. Not much to adjust on these. I guess a good tuner cleaning would help if it seems to need it.

[maxhifi]

I have a radio shack branded digital tuner version of this set. It drove me insane with non working colour, which turned out to be a bad trimmer capacitor. Service manual could come in handy if anything goes wrong. Excellent picture though and it's nice and small so you're not going to resent owning something enormous once it's up and running.

[Davros]

I agree about the size, it's really smaller and lighter than I remember a 13" TV being. It's going to go nicely in my workshop.

It "appears" to have worked fine the one time I ran it up, but it's super dusty inside, and I've got to clean it up before I put it in regular use.

I am going to change the filter caps, the large one is starting to dome a bit, and I plan to use the TV a few hours a week at minimum.