mopar - I am less than an expert in this area but your problem description says "some bad electrolytic capacitors" - a cause for concern even if you find exact replacements.

Capacitors do fail as do other components but to fail together suggests that something - over temp, overvoltage, etc - caused the failures. Replacing the caps would likely not address those failures unless the cause were removed.

Maybe they dried out? Electrolyics can suffer that, so I would replace them, but should the problem arise again, take it to a TV repair specialist.

Electrolytics often go bad, you might be able to replace them with tantalums and the chances are it will be more reliable if you do.

Originally Posted by Hero999

Electrolytics often go bad, you might be able to replace them with tantalums and the chances are it will be more reliable if you do.

As usual - not in my experience in TV's!

Replacing using good quality electrolytics, and using 105 degree ones (not the usual 85 degree), should easily outlast the TV.

Originally Posted by Nigel Goodwin

As usual - not in my experience in TV's!

Replacing using good quality electrolytic, and using 105 degree ones (not the usual 85 degree), should easily outlast the TV.

I must totally agree Whenever you replace Electrolytic capacitors in a TV use 105 degree replacements.
Standard 85 deg are cheaper thats why the manufacturer uses them.

Originally Posted by Nigel Goodwin

As usual - not in my experience in TV's!

Replacing using good quality electrolytics, and using 105 degree ones (not the usual 85 degree), should easily outlast the TV.

I agree, but I've heard you complaining about unreliable tantalums and I'd disagree. I've never seen a tantalum go bad before, but I've seen plenty of electrolytics go bad in my time. I would think that your bad experiance probably be due to a dodgy Chinese supplier providing you with cheap knock-offs.

Originally Posted by Hero999

I agree, but I've heard you complaining about unreliable tantalums and I'd disagree. I've never seen a tantalum go bad before, but I've seen plenty of electrolytics go bad in my time. I would think that your bad experiance probably be due to a dodgy Chinese supplier providing you with cheap knock-offs.

Not supplying me, I've never ordered any - all the TV manufacturers who used them soon stopped because of their appalling reliability. From a repair point of view first thing you do is look and see if there are any tantalums, change them all, and that cures most faults.

Electrolytics aren't wonderful, but they almost always go low ESR - tantalums almost always go short circuit.

Look in any domestic electronics, it would be EXTREMELY rare to find a tantalum - but for a year or two in the late 70's early 80's, they were everywhere (and going S/C everywhere).

The only place I've ever used a tantalum is as the timing capacitor in a 555, and that is one place I WOULD recommend them

I must disagree with you Nigel, about ELCO vs. TANTALUM. They both have their place in designing things. I think for the purpose mopar r/t suggested tantalum caps could be same if not better replacement. The main reason they don’t use tantalum is a PRICE. But tantalums are better for most applications if no need for really big caps. Also it is truth that tantalum caps are more prone to go short rather then low ESR but it really happens rarely, and not to mention that those caps you are talking about were lower quality then new made tantalum caps. On that board of mopar r/t, often addressed as Hyperboard or Hypermodul it happens al the time caps go bad and all one shoul do is to replace them. Since this are SMD caps however it might be a problem to find replacement SMD tantalum caps, but the caps he needs are 10uF 16 V and he needs about 10 pcs replaced.