Just A General "Does This Look Blown To You??" Question

[Michale32086]

I am assuming that if one is not sure whether a cap is blown or not, it's likely a good idea to swap it out...

[tom66]

Re: Just A General "Does This Look Blown To You??" Question

Is this a Hitachi plasma power supply? The 100V caps bulging is a common and well known issue with these.

[Michale32086]

Re: Just A General "Does This Look Blown To You??" Question

It IS a Hitachi... Seems to work OK which surprised me. I thought for sure those were blown...

[SteveNielsen]

Re: Just A General "Does This Look Blown To You??" Question

Test them?

[zomi]

Re: Just A General "Does This Look Blown To You??" Question

Change them, its better to change them now, and have them fail and risk something else being taken out in the process

[Dang]

Re: Just A General "Does This Look Blown To You??" Question

I have an Hitachi plasma my self, I'm still getting around to fixing it needing a buffer board but from what I remember from my research about these particular caps is when they start bulging, they produce an instability which can take out the lower/upper buffer board, someone somewhere said something about it being a higher voltage is produced but I can't back that idea up, needless to say a change is probably a good idea.

[aaronwt6]

Re: Just A General "Does This Look Blown To You??" Question

I have an Hitachi plasma my self, I'm still getting around to fixing it needing a buffer board but from what I remember from my research about these particular caps is when they start bulging, they produce an instability which can take out the lower/upper buffer board, someone somewhere said something about it being a higher voltage is produced but I can't back that idea up, needless to say a change is probably a good idea.

I was just about to type the same reply. Consider yourself lucky if you have those two caps bulging with both buffers still functional. Every one of these I've encountered with the caps bulging has 1 or both buffers blown. It will happen if the caps aren't changed. Just a matter of time.

[Michale32086]

Re: Just A General "Does This Look Blown To You??" Question

Good points all.. Thanx for all the replies. Much appreciated...

[Shinju]

Re: Just A General "Does This Look Blown To You??" Question

Can of air and clean that poor sucker out!

[Michale32086]

Re: Just A General "Does This Look Blown To You??" Question

Yea, I already took my air compressor to it.. What a mess..

[Michale32086]

Re: Just A General "Does This Look Blown To You??" Question

Let's say, for the sake of a discussion, that I ignored the great advice I received and left the (apparently) blown caps in and ran the TV all night...

Let's further postulate that, when I came in the next morning, shocker of shocks, the TV had died...

What boards did I likely blow??

I did replace the caps (day late/dollar short comes to mind) but the TV still won't come on.. I hit the master power button and the RED standby light comes on and it immediately goes to BLUE which is labeled ON.

I hear a distinct relay CLICK when the master power button is pushed and a faint relay click a few seconds after the light goes BLUE..

Nothing appears obviously blown, but I know enough to know that doesn't mean much...

Where should I look first??

For the record, this is a Hitachi P50T501

[tom66]

Re: Just A General "Does This Look Blown To You??" Question

Buffers and Y-sustain, usually. Maybe Y-sustain survives?

[retiredcaps]

Re: Just A General "Does This Look Blown To You??" Question

Let's say, for the sake of a discussion, that I ignored the great advice I received

More tough love.

"A man who carries a cat by the tail learns something he can learn in no other way."

Mark Twain


DON'T FIX IT. Put it up somewhere you can see it daily as a reminder for taking shortcuts and ignoring the advice of posts 5, 6 and 7.

[mmartell]

Re: Just A General "Does This Look Blown To You??" Question

Lmao

[Michale32086]

Re: Just A General "Does This Look Blown To You??" Question

More tough love.

"A man who carries a cat by the tail learns something he can learn in no other way."

Mark Twain


DON'T FIX IT. Put it up somewhere you can see it daily as a reminder for taking shortcuts and ignoring the advice of posts 5, 6 and 7.

Touche'

[ReeceyBurger123]

Re: Just A General "Does This Look Blown To You??" Question

Never ignore badcaps I learnt that the hard way several years ago, maybe you will learn from this not to ignore them ;(

[Michale32086]

Re: Just A General "Does This Look Blown To You??" Question

Never ignore badcaps I learnt that the hard way several years ago, maybe you will learn from this not to ignore them ;(

Abso-tively....

[keeney123]

Re: Just A General "Does This Look Blown To You??" Question

Yea, I already took my air compressor to it.. What a mess..

You may not want to use a air compressor as they usually have some oil in the lines. The clean air cans I think are a better way to go.

[ReeceyBurger123]

Re: Just A General "Does This Look Blown To You??" Question

You may not want to use a air compressor as they usually have some oil in the lines. The clean air cans I think are a better way to go.

They are also usless, I use a small ball compressor that generates air as it runs only cost £10 works better than a tank compressor and crappy cans of air.

[drussell]

Re: Just A General "Does This Look Blown To You??" Question

You may not want to use a air compressor as they usually have some oil in the lines. The clean air cans I think are a better way to go.

As long as it is a direct-drive, oil-less type compressor (most small compressors are this type) and the hose has not been used on an traditional oil-lubricated compressor or with a line oiler you should be fine.

Around here the air duster cans are WAY too expensive. A couple cans of that and you might as well buy yourself a small compressor.