Any TV Repair Folk Here?

[repairguy]

After 19 years my Sony tv has developed a problem. It’s the first problem it’s ever had. When turning it on it can take several minutes for it to start after pushing the power button. Once it’s on it works as it should. I searched online but couldn’t find someone with the same issue but I’m not as good with the internet as most probably are. I know it’s very outdated but it does what I want it to do. Liking most things vintage I’d like to repair it if someone has experience with this. I bought the tv 12-3-2003.

Model KV-36FS100

Serial 19118086-J

 

[DADoES]

 
Melvin, I can't help with your repair problem ... but I have a 1987 Magnavox RH5550AK01 for free if you have any interest.  Need to get it out of the bedroom.  Also a 2005 Sanyo DS24425.  Neither has had heavy usage.

 

[repairguy]

Thanks Glenn. I’ll keep that in mind if I can’t find someone to help with this one.

Mine may be too complicated. I found the service manual and it’s 249 pages long. I was hoping someone could point me in the right direction and I might be able to make the repair.

 

[sudsmaster]

Well, offhand, I'd stab a guess that there's a problem with the TV's power supply. It sort of sounds like a capacitor issue there. And if a capacitor needs to be replaced, then it should be done cautiously because they can store a charge. Bear in mind that I've never replaced a TV power supply, and I generally just buy a new TV set as needed. If you have a Costco in your area then they seem to have the best prices.

 

[pixelhack]

Because of the age of the tv I would expect many capacitors to have drifted out of spec with no outward signs of failure such as bulging or leaking. Without special test equipment to measure ESR it can be impossible to determine if a capacitor is bad.

If you see obviously failed capacitors inside you could try replacing them but I don't recommend trying to repair this due to the high voltages involved. You really need to discharge the high voltages stored in the capacitors to work on this safely.

I have only fixed a couple of tube tvs but I would guess that the picture tube is starting to go and if you brought everything else back to spec you might still have this problem.

 

[repairguy]

Thanks for the responses. I still haven’t decided what I’m going to do yet.

 

[paulg]

A complex set

It is not possible to know true cause from the information provided. This is a complex TV.
Some Sony TVs of these variety have self-checks that do not permit the picture to appear unless all checks out ok. One such function is the automatic picture-tube balance check. This check is done to balance the picture tube guns prior to the picture appearing. If the picture tube is aging, it may take longer and longer for the image to appear.
That does not mean that the picture tube is bad. What I am going to tell you is to find an old-timer who fixed Sonys to look at it. There is a lot going on in the background with this set.
Sony sets are not modular, you cannot just replace the power-supply as an assembly. And I don’t suggest throwing capacitors at the set as MANY will suggest. The result is probably futile.
So no fix from me. Throwing parts at the set may work for a five-tube table radio or a 1964 Zenith B&W but that is not the case here.

 

[pixelhack]

I had a look at the repair manual over coffee this morning and I think Paulg has nailed this one.

 

[robbinsandmyers]

i wish I could find someone to fix my grandparents 1952 Stromberg-Carlson. It hasnt worked since 1961

 

[repairguy]

Replies 6 and 7

I did find the service manual online and it is a whopping 249 pages.

 

[rp2813]

1952 SCTV

The Antique Radios forum has a section for vintage television sets.  That's where I found a local guy to bring my 1950 Admiral back to life, and it was a fairly simple job of replacing capacitors.  He didn't change a single tube, and the picture tube was fine.  I had the Admiral revived as a 50th birthday present to myself, and it cost me about $100 for parts and labor.  Considering that I only paid $5 for it in the early '80s, that was reasonable.

 

Here's a link to the ARF.  There may be someone near you who can make repairs to your parents' TV if it doesn't have anything major wrong with it.  There used to be a directory of TV repair guys, but I didn't see it when I checked just now.  Poke around and you may find it.

 

 

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[48bencix]

34" Sony CRT

I bought a 34" Sony 1080i Hi Definition 16:9 CRT TV in 2006. Similar to yours. At that time it cost $1200 but was cheaper than the plasma sets and highly rated. I loved that TV but it started to fail and I got a Sony 50" TV. I finally had to pay to have it hauled away, it weighed 200 pounds. Tried to sell it on EBay but no luck with that.

 

[mattl]

I've got a 38" 16x9 1080 RCA sitting in my basement, all 300+lbs of it.  Paid $2600 for it in '04.  Still works but so outdated. Got it's replacement a 50" plasma sitting next to it from 2009, works but outdated. Right now my main viewing is on a TOL 4K 65" OLED, stunning image quality.

 

To the OP unless that TV has some emotional meaning to you,  you can   new display that will outperform it by a wide margin for about what it migth cost to get a diagnosis, not counting repair.

 

[sudsmaster]

I've a 27" Trinitron that probably still works. It's been sitting in the cabinet I bought for it back in the 1990's (I *think*). Now it's in the  guest bedroom. Have since replaced it with several flat screens. Good TV, but ... flat screens rule.