Logik LCXW32HD1-Standby Transformer Problems

[scooby-doo]

I have just screwed up, bought a repair kit for the Logik LXW32HD1 "Blowing Fuses" fitted all ok, it stopped blowing fuses but I am not getting any voltages.
In the description where I bought the kit, it did mention to test the Standby transformer(16es-x03), I decide to do this now and found it's fluffed.

What can I do? is there an alternative. please dont say rewind it, I will fluff it up.

Thanks for any help

[sparky]

hi
is it t20? or t21? try ohmsupplies they stock them i believe it is the
5volt supply
dave

[Ohm Supplies]

Dave is right, it is a 5v stand by transformer however its not available as a separate item.

The damage to is was caused by U2 blowing, it doesn't short internally but blows the wire from one of the legs to the windings. Its simple if a bit tricky to repair but I can instruct you how,
Where did you buy the kit from?
Regards
Andy

[scooby-doo]

Cheers Andy/Dave

It is the standby 5 volt transformer T4, I can see which leg is blown as the yellow tape is burnt and so is the board by one of the pins.

Sorry Andy went to your competitor CHS   
Should of bought the bits individually as it was only three parts of the kit that were blown, U2 DB1 and T4...which is not included.

I am going to have a look now to see if I can have a go at fixing  the transformer if I get stuck I will give you a shout.

Thanks anyway

[scooby-doo]

Bloody hell that is a little fiddly, getting a reading from the pins now so just going to fit and see, will let you know how it goes.

Thanks again,

[Ohm Supplies]

i cut the tape so i can see the wire on the coil then "loop" the leg and re-attach,

there will be a shortened version of this kit released in the next week or so, kit/kt number 15something, it will have less parts and therefore cheaper, but will have an additional part or 2.

With just the board switched on and upside down (so you can see the track undernieth) put your meter on the 2 points above c55 so you can check your repair before fitting it into the set

regards
Andy

[scooby-doo]

I think I have screwed this transformer up now

The wire has snapped and I haven't got anything to solder too.

Back to the drawing board on this one.

Thanks for all your help

Will the new kit include the transformer???

[Ohm Supplies]

Sorry, the part is not available as an individual item as it seems to be unique to this board, stand by transformers can be quite expensive to buy individually and to have them made would need a min. order of between 3,000 and 50,000 (we enquired on one once)
  If you gently cut away some insulation without cutting the core, loop round the leg, tin both ends then solder together it should be repairable. Of all the ones I’ve done I’ve never know the wire not to be retrievable,

regards
Andy

[scooby-doo]

Andy cheers, you have obviously never worked with a clumsy bafoon like me.

I have just had a result and bought a faulty PSU for a tenner. with two more cracks of the whip I should get it right. Fingers crossed

[Ohm Supplies]

i'd say its 1 in 20 that the tx is damaged, it depends which way the fsd blows, upwards or sideways etc.

Andy

[Turnip]

Hi S/D,

No-one has yet said what PS is used (Guess it's Profilo with that FSD200 that just pops for fun and our profit)

If so, might well have a 'TR 20'  S/by tranny - few become  O/C - Chris.

PS - if not Profilo - what is it  ?

[scooby-doo]

Hi
It is the Amoi PSU. FSD200 was quite badly burnt around a couple of the legs it also took the bridge rectifier on the underside out too.

Should have the second hand board tomorrow so hopefully will be sorted.

[Ohm Supplies]

From.memory the tx is made by tdk. Amoi normally manufacture much smaller supplies and as far as I know,none of the transformers on this board are available new. It does the same job as tr20 and to be honest if it was physically further away from the fsd200 it would be ok.

Regards
Andy

[scooby-doo]

Hi

Finally took delivery of the board today, fitted the transformer, seems to be a problem

@Andy: What readings should I be getting from the places you mentioned.

I fitted the PSU to the TV and when you turn it on all that it does is all the control lights and the red led start flashing no sequence just  repetitive flashing.

Any help appreciated

[scooby-doo]

Hi

Got the flashing lights sorted, I had put U4 in the wrong way round, all I am getting now is a standby light no power etc etc.

Thanks again for any help