Harman Kardon AVR 7550HD (2008 announcement) - Page 43

Originally Posted by Flash676

My 7550HD has developed a loud buzzing noise. The cause is the small 30mm fan, but I don't think it's actually the fan itself making the noise.

If the fan is stopped or unplugged, the noise disappears.

I removed the fan from the receiver and tested it separately. The fan produces a bit of noise that is audible with my ear next to it, but otherwise is fairly silent.

I then placed another 30mm fan with similar specs in the receiver. Although quiet for a while, this fan also developed the loud buzzing noise.

Since both fans are quiet when outside the receiver, I think the fans may be off balance or vibrating just enough to cause something inside to amplify the noise. Giving the receiver a nice love tap on the top/side where the fan is located will temporarily silence the fan, but the noise always returns.

Despite my best attempts, I just can't get the buzzing noise to stop when either fan is in the receiver. Any suggestions would be appreciated.

Originally Posted by Flash676

This particular unit was a refurb picked up through Harman's eBay store. This particular unit has been very solid up until this issue with the fan emerged.

Originally Posted by ducky6

My fan became really noisy after approx. 3 months.
I tryed the drop of oil trick that Mcode suggested and that silenced it completely.

Originally Posted by CHRIS650

is it easy to do? where is the instruction?

please

Originally Posted by CHRIS650

same here.. i am buying from ebay harman store...
how long did it take before the fan problem emerge?

Originally Posted by ducky6

Very easy.... my fan was extremely loud and the noise went completely away.
This was approx. 3 month's ago and is still very quiet.


unplug receiver
remove cover
looking from the front, the fan is on the left side
add a "drop" of light oil to the bearing on the fan

Before you add the oil you might also try blowing out the fan with a can of compressed air

I followed mcode's instructions see below

Just found an excellent post #1219 with pics from the Tophinator see link
http://www.avsforum.com/avs-vb/showt...7#post21504727

Originally Posted by Bsound

Thanks for your reply. From the looks if it, that would be the side of the fan facing towards the middle of the receiver. I can't really see the shaft though. I'll try a small drop strategically placed.

Originally Posted by The Tophinator

That is correct. I just gave mine a very short blast of garage door lube from the inside of the case and it has been quiet since I did it about a month ago. EDIT: I had previously blew compresed air from both sides to remove all dust from the fan.

Originally Posted by dRockHK

As a former DVD 48 *user* (I still have it, tucked away) who upgraded to the BDP1, I would say yes - it is as good or better than the DVD 48 for DVD playback, and it plays Blu Rays

Like your soon-to-arrive 7550, the BDP1 also has a USB port which you can also play mp3/wma or pictures from (You *must* insert a 1gb+ flash drive in the USB port if you want to use any BD-Live features on equipped blu-rays (plus hook up the network connection))

The menu structure/layout is also much nicer looking, and easier to use than the DVD 48.

I'm sure the analog output audio performance of the DVD48 is better, though you only need to use the BDP's HDMI connection (unless you will be using the BDP1 for a zone 2 source, in which case make an analog connection as well)

One thing I especially like about the BDP1 is that the analog composite video output is active at all times, regardless of HDMI output resolution. (It also will downmix the audio to the L/R analog output at all times as well) This is nice if you want to make use of the 7550's multiroom/zone2 video feature and will be using the BDP1 as a Zone2 source. In my home I set up distributed audio using A-Bus, and installed in-wall LCDs next to or near the volume controllers, fed from a composite video distribution amp connected to the 7550's zone2 composite video output. This allows me to see the 7550's Zone2 on screen display menu from each room, and for sources which have a composite video connection I can see the source video on the screens which makes control a breeze. With the BDP1+7550 Zone2, I can view and listen to the current source content in another room while continuing to view HD 1080p, 7.1 content in the main room. (Really enjoy this when I want to listen to concert blu-rays throughout the house)

Again, the drawback is no SACD playback. Though concert and music blu-rays are slowly increasing in popularity.


Note: If you want a blu ray player there are much better values available than the BDP1 (even at refurb prices), admittedly I paid a premium for aesthetics. I'm a sucker for matching components

Originally Posted by CHRIS650

I ordered a BDP1 from eBay. It arrived today. It's a BDS 5, which is supposed to be much more expensive. But, after testing, I am think about calling the vendor and try to correct the error.

1. BDS 5 is very good in video performance.
2. BDS 5 has slot style disk tray, better than sliding tray.
3. BDS 5 has different width from 7455.
4. BDS 5 has inferior info panel in the front
5. BDS 5 has a nob in the front that is very brightly lit. And I cannot dim it.

Do you guys think I should get a BDP1 or just keep the BDS 5? Or, I could use the the BDS 5 for now, When BDT 3 comes out, I will sell the BDS 5 and get BDT 3. I got this BDS 5 for only $277 free shipping.

Originally Posted by dRockHK

Wow, that's a big mix up! Does the packing slip also say BDS5 ?

The BDS5 is not just a blu-ray player, it is a 5 channel A/V receiver . Think of it as a more upscale "HTIB" type all-in-one.

There should be no issue using the BDS5 as your player, with the HDMI output to the 7550. Set the BDS's HDMI audio output to bitstream native (which it will probably default to while in the 'auto' mode anyway)

There would be no advantage to getting a BDP1 in favor of that BDS5 except having the matching look and width of your 7550, and lower power consumption.
The menu structure / layout is different between them, though this would be personal preference (FYI, the BDT30/BDT?3? uses a very similar menu layout and info/status bar like the BDS2/5)


Most likely, as it appears the refurb BDP1-Z stock has been depleted (no longer on eBay store or harmanaudio.com), a BDS5 was used to fulfill your order. That said, if you decide to contact Harman audio don't be surprised if you are only offered a refund instead of BDP1.

If you really want a BDP1, I have a couple and would be willing to trade one!

Originally Posted by cppatin

I received a UPS email yesterday my replacement 7550HD (for a prior 745) shipped last night!

Originally Posted by jsil

What does the EzSet/EQ II do with the sub. Does it work like Audyssey, MCACC that doesn't EQ the sub or like Yamaha the cuts it off.

Originally Posted by phantom52

Your question was answered by MCode in the other thread. He knows these things a lot more than I do.

Originally Posted by E55 KEV

What other thread? Is this it:

http://www.avsforum.com/avs-vb/showthread.php?t=1304343

I have notice that I get little from my sub when using my sub's single direct input from the 7550. I can get plenty bass using the left/right sub input and adjusting the volume.

Originally Posted by kmaclac

I have an issue when watching TV over the air. I have a homemade antenna connected to my Panasonic Viera using a standard coaxial cable. The TV has a digital tuner so I actually get 1080p signal on some broadcast television. The TV also has optical audio out and I send that to the 7550. The 7550 interprets (correctly) this audio signal as Dolby Digital, which is great. The only problem is that the 7550 seems to noticable delay the audio so that the video on the TV is ahead by 0.5 secs or so. When watching sports like hockey, or even just movies or news this delay is annoying.

I know that the video signal is not being processed by the 7550 and so the audio is going through an additional round of processing, but is there any way to reduce or remove the audio delay on the AVR?

Thanks.

Originally Posted by kmaclac

The TV has a digital tuner so I actually get 1080p signal on some broadcast television.

Originally Posted by kmaclac

Thanks for the suggestion ducky6.
I may have set the audio delay in my previous set up without knowing. However, I seem to have solved the problem by unplugging the AVR while I fixed the video fan squeal that has become a well known issue. The fan is nice a quiet now and the audio delay also appears to have resolved now that the unit has reset to defaults after loosing power for 30 mins or so.
E55 KEV: You are correct that my over the air signal is only 1080i, my mistake.

Originally Posted by ducky6

kmaclaqc.....I believe the 7550 can be left unplugged for approx. 1 month before the settings would revert back to factory defaults.

Originally Posted by ducky6

kmaclaqc.....I believe the 7550 can be left unplugged for approx. 1 month before the settings would revert back to factory defaults.

Originally Posted by M Code

The AVR7550HD/760/660 engineering limit spec for keeping memory presets is 21 days..

Just my $0.02...