20 Most Recent Panasonic SC-HT740 System - Page 2 Questions & Answers

The manual has the programming codes in the back of it.

Never hook up theater units with the power on, you need to have the fuse replaced in your unit. You need a trained tech. for this electrical problem.

F61 is amp error,on these unit the fan must turn when first turned on,see if fan turns when powering up,if not clean fan or spin with hand on start up.if fan turns when first turned on,you have a defective output ic,common on these units.if you have a volt/ohm meter measure the dc voltage across each pair of speaker jacks,if you get anything higher then a few volts,that channel will be bad.However The fans are the most trouble on theses units.

Hello

Ok, yes, this is a overheating error, but it doen not necessarilly mean that the fan is broken though.
The fan might just be covered in dudst particles, which enables the fan to spin at full speed to enable sufficient cooling.

Just open up the unit, see if the fans actually spin, if they spin, then just clean out the unit of all dust particles, if they are ot spinning at all, just buy 2 new fans, it is cheap.

If the unit is still under warrenty, just send it back, they will repair it for free.

Hope this can steer you in the right direction.

Kind regards
Andrea

You have shorted the speaker wores and blown the output amp pac. Depending upon the model, the replacement part varies from $75-$95.I don't have a listing for the SC-HT740, but the cost range should be accurate.

Dan

You probably can get the parts from Tritronics, but as far as I know, there aren't hard-copy manuals normally made for any of the newer products. The only paper available nowadays are the users manuals... The service manuals are on-line at Panasonic and available only to authorized repair centers. Sorry.

I'm curious - how in the heck did a gear break in the thing??? There's nothing strong enough in the drive system to do that (either the motors would sieze or belts slip).

Bugman Mark

Audio amplifier IC damaged

try this - while in DVD mode (no disc) hit the stop button on the unit and the "10" button on the remote. It might work as this initilizes the unit.

I have same problems please If you know anything help me
my email adress
[email protected]
thanks

fs 1

it is the cooling fan

I've got the same problem. The Changer block or traverse mechanism is a big cog work. One thing changed and its toast (I THINK) The white nylon gears are set and they are dependent on some cue to be moved. The left side of the block can pop off after the white top is removed, The side goes in and out to change ... plastic tabs. I'm pulling my hair out.

I've autopsied one after I bought another. The new one did the same as the old one right off telling me it looks like the issue is in the control, possibly the disk reader mechanism, or a glitch in the communication with the main board its tethered to with the ribon cables.

I'm searching for a reset hack/trick/ whatever, to reset it to factory. The problem is a glitch in the software, I Think.

Anyone have a clue on this?

The t.v. broadcast will have to be in 5.1 for it to work, otherwise it will just be a 2 channel stereo mix.

please bring a contact cleaner from radio shack near you and apply the spray over selector and press it many times.

Very specific alignment procedures.Tray must be removed along with front panel.Gears must be reset for proper timing.This is not a simple fix unless you know proper procedures and timing points.Best to have it serviced.

Output IC is defective.Not much to do except have the main unit serviced.Output IC is rather costly.Before taking it for service, disconnect all speakers and power on.In F61 comes up IC is definetly bad.If unit works reconnect 1 speaker at a time(with power off) and retest each time.Repair bad speaker .