Turn it on , you hear the power supply click and then a pulsing , chirping sound i bought from repair shop in fl.it had a new power supply and new convergence chips thanks to power surge! its been fine for 2 years and then poof! as it is chirping the red led near the ( def power supp ) connector is pulsing bright to dim in synch with the chirp. it sounds just like the pulse of tv powering up but instead of one chirp and a picture, i get no picture and chirp,chirp,chirp,chirp! the guy in fl says to replace the convergence chips, another shop says it sounds like the high voltage side of the power supp. help!
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Re: zenith iqc50h95 50 in rear proj
Rainman, can`t really be of any great help on this one, both techs can be right, the chirp is exactly as you thought, the set is trying to come on but there is a short in the set and it`s shutting down because of the short, could be convergence, low voltage power supply, high voltage power supply, until a tech gets in there and starts un-loading circuits it`s impossible to say where the short is, gonna have to call someone out for this one, good luck with it, BMW Rider
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That clicking sound you hear is your TV's power supply not getting enough current to turn on the screen. Could be as simple as a blown capacitor on the power supply board unit. Many TV repair shops just replace the whole unit, I am almost sure that is your problem with you TV as I've had the same problem with several TV's before. That clicking sound always points to a power supply gone bad.
Sounds like a power supply problem, If you are competent with electronics, you may find some blown capacitors or resistors on the power supply board. Equally you can probably buy a new power supply board.
WARNING: the power supply board contains lethal voltages even when switched off and unplugged. If you are unsure what you are doing take it to a repair shop.
it booting properly & you hear the windows welcome sound. the disply dual it cant be viewable u can view litel bit is it then your FL got faulty and next is your lapi mother board not genrate 15v supply for F.L 90% your F.L faulty contact your location so i tell you local repair and kindly rate me
Most likely there are defective capacitors in the power supply. The chirping you are hearing is the attemt to fire up the supply. The cold may have been enough to cause the caps that were on the verge of failing to completely fail. This should be a simple repair for any shop. If you wish to attempt the repair yourself, let me know and I'll try to get you mode details on the likely defective parts.
i had the same problem with my FL 8-se. it turned on but didnt show the bottom. i bought a new transducer from gander mountain and it works good as new. transducers cost around 70 bucks, but fixed the problem.
This indicates a problem in the power supply either the low voltage switching supply or the High voltage power supply. The sounds you hear is the shutdown circuit activating, I would not suggest that you try to repair this problem because of the dangers involved. I would suggest that you take it to a qualified TV repair shop. This problem should not cost you much, however it is the best choice for the problem you described.
If one of the secondary supplies is shorted, the power supply will "chirp" when plugged in. This is the power supply's way of protecting itself and this usually happens when the horizontal output transistor is shorted. If this set was in my shop and needed a new output transistor, a fair price would be right around $100.
Most of the time, when there is a chirping comming from a TV set, there is a short somewhere inside the TV set. That chirping noise is the TV's power supply starting up and shutting down because of a heavy load on the power supply. These sets have no user replaceable parts inside them, so play it safe, and call out a pro to assist you in this repair. good Luck
PS Please do not forget to rate this thread.