Meridian Unplugged - Powered by MrTechGuy.co.uk Forums Discussion Meridian - Systems Anyone ever swopped out a speaker dsp board ?

I just swopped out a 7200HC DSP speaker board . Took pictures before I did a thing and cabled exactly as before . Reconnected , hit the power button , and without any signal being sent to the unit either 1 , 2 or 3 lights appear in the display briefly but the grinding howl coming from the speaker's drivers is absolutely demonic !

The only difference between the old board and the replacement ( it seems to me that this could be an older board than the original ) is that there was a piece of double-stickied insulation tape holding the rectangular larger than HDMI connector in place , and this was not present on the replacement . It didn't stop a good connection being made .

Tomorrow I intend to reconnect the ( originally ) troublesome one to see if it plays better than this one ( in case it was damaged in transit )


Any ideas ?

Goodness, has someone been attentive to you plight at last?! I hope you get this sorted...you've been left out on a limb for ages!

Cheers

George

Which problems dit you have?
From where do you have a "spare" board?
Do you have some knowledge in electronic ?

Thanks , George .

I really thought that finally I was going to get it nailed . The problem was annoyingly intermittent and completely ruined movies and more particularly music listening sessions .

I was , quite literally , like a kid at Christmas when I got the package opened ( especially as there were a few mishaps with getting getting it actually delivered beforehand ). Just powered down and removed the screws , missing on the replacement , from the old one carefully taking photos as we went . There are basically 3 plugs to be connected and the VGA - like connector .

All were attached correctly and yet at power-up we were greeted by a very angry lawnmower - like sound ! V. scary !

I suppose if I were to reinstall the original board and it worked it would confirm that the replacement is , in fact , somehow damaged ? Apart from a slight bend in the frame at one end it does not look damaged .


Robert ,

The board came from M . Original problem thread here :

https://www.meridianunplugged.com/u...bb=showflat&Number=102493#Post102493


Best

~M~

Really wish I could help Manus, but I can't

Can't believe they are leaving you to fend for yourself on this one. After all, we're not talking about an iDock level of purchase here. Even Bill Gates would agree that some Serious cheddar was involved!!

Best of luck and hope it works out for you and before Christmas as well. If you're anything like me, the Christmas period is when most music listening and movie watching happens in a given year!!

Cheers
Ronnie

Cheers ,

Season's Greetings to you and yours !

Youre exactly right , of course , the next 2 weeks is the longest period of the entire year spent with free time for listening to music and catching up on the backlogged movies .

I was hoping too to have it sorted to give the system a really good tweak as I haven't done MRC in quite a while and had to stall yet again my rackmounting plans ( I have the Middle-Atlantic rack but don't want to add any more potential problems until my system is working correctly and reliably ).

Its still possible that I may not keep the speakers if I dont get them working reliably as its really depressing with the problems at the moment .


Maybe one day ?

~M~

M

best thing is to can you show some pictures,
some for the overview,and some detail from the board.
Dit you take care of electrostatic during swapping the port,
means have a electronic workingbench or at least you and the table and the boards have to be grounded before you start your work?
If you didnt, its a strong possibility to damaged booth boards(old and new).
Are there some jumpers or switches on the port?
How does the connector goes on the board, smoothly or a lttle hard?
Is there a chance that a pin maybe is bented ?
Disconnect at look for the plugs or inside the connector.
What you mean with a slight bend in the frame?
Show a picture
Dit you look at the revision nummer of the board and the date?

I dit personally change from MK1 to MK2 with the 5k and the 5.5 k.
Everything running smooth after that,
but you have to have electronic experiences for that.
Also i dit take out the control(DSP) board on the 8k,
as i had sometimes some cracking noise in the chassis.
Finally M replaced then the board on the 8k, checked the whole electronic chassis and changed one power amplifier.

If you like, I can recommend a Meridian UK dealer (who is their largest one now based on what they've sold over the last 12 months) who would be willing to travel to Dublin and take a look at the problem and try to rectify it

Not going to happen before Christmas and they would likely charge you for the day and flight. But by comparison to the Speaker price(s) and perhaps "replacing" them, it would be a relatively worthwhile investment

It strikes me that you would be able to retrieve some of this from Meridian anyway, as it sounds like a Manufacturing issue since day one

Let me know if you're interested. I will then ring the Dealer Director (who is also a good friend of long standing) and give him an intro to the problem. He would then ring you to arrange something

They have made a few visit over to me during my rebuild in 2007 and have installed multiple systems in another friends house in Cork. He also mentioned to me a few months ago that he had some significant installations on the go in Dublin

Let me know if you would like to proceed, but hopefully you can get it up and running sooner than that anyway

Thanks for the offer , Ronnie . I have a feeling I know who you're talking about and I believe the chap concerned is possibly an ex-M employee himself if I'm right ??

Frankly , if now both of the boards are somehow manufacture-imperfect then I would really just like them to give me one that works and then I will ' go quietly into the west and diminish '

Most likely I would be back here inside a month blathering on about how fabulous they sound and tweaking MRC to beat the band , but the awful truth is I'm not enjoying either music or movies as I should at the moment because the problem occurs infrequently ( ie. not everyday , not every piece then sometimes practically evrything I put on regardless of format/player )

I'm now going to spend tomorrow afternoon trying the replacement unit first , then re-installing the old one if that doesn't work out in order to get some sounds for Christmas when I would much rather be doing other things.

~M~

Not quite Manus. The guy I'm referring to has been at the Dealer for about 20 plus years now and I first started dealing with them about 15 years ago (scary!!!!)

I do know that they have an ex-Meridian employee (and a relatively senior one at that) working on contract with them and he may well be the best guy to travel if you don't solve the issues

In any case, nothing will happen until the New Year, so hopefully you can sort out your Speaker tomorrow and get back to "Nirvana" for the Christmas period

Long story short, if it doesn't work out and before you stuff the D7K2HC in the Bin, then bear the option in mind. As I said, it might be cheaper than all the heartache for the last few months.

But no question, Meridian should be camped on your doorstep for the last few months until this was sorted out. Unforgivable IMHO

M, i dont want make afraid, but if something happened as you swapped the boards,
how you can shure when yout take the old board back in- not maybe now destroy your chassis or amps?
I wouldnt risk it,send the complete electronic back to M,
they can test it without a risk for you...
At least i should get their advice.

Thanks fo the input , and I'll bear that in mind Robert

~M~