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Equipment Repairs => LCD TV forum => Topic started by: Turnip on February 24, 2011,12:45:26

Title: Power/Inverter Proview PI-XXXXTLTX V-A
Post by: Turnip on February 24, 2011,12:45:26

Hi folks,

These Proview panels come one inverter trannie or two (15/19 inch)  My prob is with Hitachi HIT19WDVB with the double trannie where after changing all suspect or pregnant caps, inverter goes off after half an hour - sound continuing.

Anyone solved one without a hammer  ?  - Chris.

Title: Re: Power/Inverter Proview PI-XXXXTLTX V-A
Post by: sparky on February 24, 2011,13:51:11

hi
chris try and split screen and check the tubes for discolouring
dave

Title: Re: Power/Inverter Proview PI-XXXXTLTX V-A
Post by: davenjax on February 24, 2011,16:49:41

hi chris i did come across a result with a proview ipos 150 where by changed all caps with no effect ie fault was intermittent backlight inverter although more frequent than half hour intervals then i changed the cap under the rhs heat sink and it solved it immediatly ... not saying thats your cure and without seeing the psu you have i cant see a similarity but may be worth a shot ??

Title: Re: Power/Inverter Proview PI-XXXXTLTX V-A
Post by: Turnip on February 25, 2011,06:39:07

Hi and thanks for that,

IPOS150 - bane of my life, hate 'em. Thought to attach piccy with caps replaced roughly marked. Think to blanket solder as it is virtually impossible to do much with the set working.

Thanks again - Chris.

Title: Re: Power/Inverter Proview PI-XXXXTLTX V-A
Post by: epi on February 25, 2011,08:09:47

Hi Chris
Have you tried the two ballast caps?

Title: Re: Power/Inverter Proview PI-XXXXTLTX V-A
Post by: Turnip on February 25, 2011,11:17:44

Hi Frank - well no, not yet,

Confess that with the 17IPS01-2 and that 12 puff problem, I intially (as a cheapskate) used caps out of other Monitor inverters and it made no difference at all so I po-pooed the whole biz, even after Sparky's good advice.

Eventually bought a bag of 25 from China and mended several panels - guess Sparky were right (won't say so though)

Checked those caps suggested - 5pf/6kv across inverter trannie outputs (ballast - usually in series but ?) - just can't believe they could be faulty - well 5pf is like nothing and they read OK. But thought the same though with those 12 puffs - think to give it a go - All humility for a short mo - Chris.