Isolation Transformer for TV repair

[tech2014]

I found this one on eBay, will it work for tv repair?

http://www.ebay.ca/itm/B-K-1604-Port...item51cd02cb7c

[budm]

Re: Isolation Transformer for TV repair

It is only rated for 1.25A, not really enough to run full load.
May be enough to test the TV's or monitors in standby mode.

[tech2014]

Re: Isolation Transformer for TV repair

ok, I would rather have a better one. Any suggestions?

[stj]

Re: Isolation Transformer for TV repair

how many W do you need?

[tech2014]

Re: Isolation Transformer for TV repair

doesn't matter as long as it can handle a TV.

[stj]

Re: Isolation Transformer for TV repair

14inch lcd tv? 60inch plasma?

[tech2014]

Re: Isolation Transformer for TV repair

I was told 750VA is good for TV repair, 42 to 60" plasma

[stj]

Re: Isolation Transformer for TV repair

http://na.suzohapp.com/all_catalogs/...ies/80-2000-00

120va

[stj]

Re: Isolation Transformer for TV repair

that tripplite looks seriously expensive!!

[tom66]

Re: Isolation Transformer for TV repair

I use a 750VA continuous 1500VA peak iso xformer.
I modified it so the input and output grounds are not connected (so the chassis of the TV can be grounded or floating, useful for making measurements with a grounded scope.)

[budm]

Re: Isolation Transformer for TV repair

Also watch out and make sure it is truly isolated, some of the TRIPPLITE has Neutral tied to safety Ground.

[stj]

Re: Isolation Transformer for TV repair

cant you get big isolation transformers from power-tool company's for using tools outdoors?

we have them in Europe, but they are 120v output (60-0-60 centertapped to earth)

[tom66]

Re: Isolation Transformer for TV repair

I've seen 240V isolation transformers with "power tool" ratings, if they're the same thing. (The power tool rating is an intermittent load, about 50% duty cycle.)

[chrismurphy]

Re: Isolation Transformer for TV repair

Most TVs these days are have isolated power supplies and unless you are going to test the hot side,a isolation transformer is not required

[budm]

Re: Isolation Transformer for TV repair

You do need to test Voltages on the primary side such as PFC Voltage booster, the STBY Primary side drive circuit, the Inverter (for PS/INVERTER COMBO) drive ciruits, etc.

[chrismurphy]

Re: Isolation Transformer for TV repair

You do need to test Voltages on the primary side such as PFC Voltage booster, the STBY Primary side drive circuit, the Inverter (for PS/INVERTER COMBO) drive ciruits, etc.

That's what I said ,but you normally use a multimeter to test those voltages
but you need a CRO for xysus boards etc ,in this case a isolation transformer is not required.

[LLLlllou]

Re: Isolation Transformer for TV repair

http://na.suzohapp.com/all_catalogs/...ies/80-2000-00

120va

You could run 3 or 4, or more, of those in parallel, should cover just about any tv's power needs.

When I was about 16 and extremely short on funds (IE, had to beg for money from my parents) I bought 10 35VA 120/12 volt surplus transformers from All Electronics. Wired all the primaries in parallel, and all the secondaries in series. Made a nice 350 watt isolation transformer for like $20 bucks. Still have it today, though I don't get to use it too often anymore.

[budm]

Re: Isolation Transformer for TV repair

http://www.ebay.com/itm/Xentek-5205-...-/111658341077