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Equipment Repairs => LCD TV forum => Topic started by: blackbox4498 on November 25, 2011,05:25:11

Title: ORION TV32RN10D need help set dead
Post by: blackbox4498 on November 25, 2011,05:25:11

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ORION TV32RN10D  switched off as normal now it wont switch on i have 230 v at mains fuses ok checked for visual damage to components .all seam ok any help would be grateful.

Title: Re: ORION TV32RN10D need help set dead
Post by: Turnip on November 25, 2011,06:09:12

Hi BB,

Have a note ( D424 duff and broken (H373) ) not seen one myself - Chris.

Title: Re: ORION TV32RN10D need help set dead
Post by: blackbox4498 on November 27, 2011,06:48:04

checked d 424 reads ok  i have 0v across main cap.

Title: Re: ORION TV32RN10D need help set dead
Post by: sparky on November 27, 2011,07:14:56

hi
as fuse in plug gone or on pcb or break in mains lead
dave

Title: Re: ORION TV32RN10D need help set dead
Post by: Turnip on November 27, 2011,07:38:16

Hi,

Found up a piccy - seems to be a relay near mains input, not sure about any PFC - Chris

Title: Re: ORION TV32RN10D need help set dead
Post by: E Parton on November 27, 2011,09:15:10

...Not familliar with this pcb at all ..
but the presence of a relay might suggest a seperate standby supply to drive the relay ..
Don't suppose that the small wound component is a mini mains transformer to provide the standby supply ?
A bit simplistic ...but might be a possible ...
If not then trace backwards from the relay coil ..and look how the supply to its drive transistor is generated ..
Evan

Title: Re: ORION TV32RN10D need help set dead
Post by: sparky on November 27, 2011,09:52:44

hi
take psu out look under the 2 chokes for dry joints
dave

Title: Re: ORION TV32RN10D need help set dead
Post by: Turnip on November 27, 2011,10:39:34

Hi,

On second look think I see a S/by TX and drive chip mid RHS - any secondary S/by 5V and red led ? - Chris.

Title: Re: ORION TV32RN10D need help set dead
Post by: blackbox4498 on December 06, 2011,07:31:05

not sure which chip you are refering to.

Title: Re: ORION TV32RN10D need help set dead
Post by: jimca007 on December 06, 2011,08:19:05

funnily I havent had one of these for a while but they were going down right left and centre at one point. Save yourself a lot of grief and get a new replacement from flee-bay for 30 odd quid. As much as I'm all for repairing panels sometimes financially its just not worth it.

Title: Re: ORION TV32RN10D need help set dead
Post by: blackbox4498 on December 06, 2011,14:05:17

Quote from: Turnip on November 27, 2011,07:38:16

Hi,

Found up a piccy - seems to be a relay near mains input, not sure about any PFC - Chris

cant see relay near mains input.

Title: Re: ORION TV32RN10D need help set dead
Post by: Turnip on December 07, 2011,13:15:32

Hi BB,

Its the black rectangular thing RHS just above that large copper-wound component - can't be more specific as have never met one - Chris

Title: Re: ORION TV32RN10D need help set dead
Post by: blackbox4498 on December 08, 2011,08:27:05

Quote from: Turnip on November 27, 2011,10:39:34

Hi,

On second look think I see a S/by TX and drive chip mid RHS - any secondary S/by 5V and red led ? - Chris.

i have 5v at stand by but no led`s.

Title: Re: ORION TV32RN10D need help set dead
Post by: Ohm Supplies on December 08, 2011,11:50:20

The most common fault on these  would be the following symptom:

. 5v stand by, relay click, nothing. You also get a 33v near the connections at the top.

However as you've 0v across the smoothing block, you must have a primary fault, i'd check from the bridge onwards

regards
Andy

Title: Re: ORION TV32RN10D need help set dead
Post by: Turnip on December 08, 2011,12:34:52

Hi,
Wonder if the 5v S/by applied to the main board would help engage that relay to turn set on. No Red led points towards a main board prob - Chris

Title: Re: ORION TV32RN10D need help set dead
Post by: Ohm Supplies on December 08, 2011,13:10:07

But 0v across the smoothing cap would point to a problem a little earlier in the set.

Andy

Title: Re: ORION TV32RN10D need help set dead
Post by: Turnip on December 10, 2011,12:09:07

Hi Andy,

Gather there is a 5v S/by present - Chris.

Title: Re: ORION TV32RN10D need help set dead
Post by: blackbox4498 on December 12, 2011,06:15:00

Quote from: Turnip on December 08, 2011,12:34:52

Hi,
Wonder if the 5v S/by applied to the main board would help engage that relay to turn set on. No Red led points towards a main board prob - Chris

seem to have bad mosfet i cant seem to get anyinformation on it .the number on it is k3563