Tannoy Reveal 6D

[SteroidSounds]

Re: Tannoy Reveal 6D

Thank you Scenic.
I'll post back when speaker is repaired.

[Scenic]

Re: Tannoy Reveal 6D

http://pixelbanane.de/yafu/350940276...schematics.zip
http://91.121.194.115/tannoyschematics.zip
Same file, just mirrored..

[islou]

Re: Tannoy Reveal 6D

My issues turned out to be the volume pot, followed the signal around the schematic till i tracked it down.

I usually run them at half volume so for the time being i removed the pot, measured it at half volume (since its a log pot) and replaced it with high tolerance resistors.

They have been working a treat ever since! Sound a bit more confident too, i think the pot was right on the edge even when it was working. Also removed the brown glue gunk as midibob suggested too.

The strangest part is that they now seem to run cooler, any ideas as to why this might be ?

[SteroidSounds]

Re: Tannoy Reveal 6D

Hello.
One more for the schematic.
midibob would you be kind enough to send it?

Thanks in advance

[midibob]

Re: Tannoy Reveal 6D

Hi,

Could be a 'first post' thing, I don't know? I'll drop you a PM and see what happens.
I see you are in Surrey so we are probably not too far away from each other.

Midibob

[Unaspected]

Re: Tannoy Reveal 6D

If anyone has the schematic, could they PM me? Tried to access your profile to send a message, Midibob but was denied - presumably because this is my first post - so I'll try again after this post.

Fixing these Tannoys or finding a quick replacement is of great importance.

It's that or invest in a pair of Adams...

...would rather save money than spend.

[budm]

Re: Tannoy Reveal 6D

Remove the brown glue right away and see if it had eaten away any copper traces and leads, very common problem from long time ago. It is conductive and corrosive. Fixed many consumer products due to damage by glue, also cause intermittent problem and unstable circuits due to conductive issue, especially in the audio circuits and power supply

[midibob]

Re: Tannoy Reveal 6D

Hi Daniel,
I've PM'd you. I did mail them but you obviously haven't received them?

Bob

[danielrussu]

Re: Tannoy Reveal 6D

Dear midibob,
It seems you are my one and only hope. I face similar troubles with the nasty 6D amp and I desperately need its schematics. I'll be most grateful to receive them from you and mostly happy to help with anything.
Regards,
Daniel
daniel_r@israelmail.com

[midibob]

Re: Tannoy Reveal 6D

Hi Foggy,

I've sent you a PM.

Cheers
Midibob

[Foggy]

Re: Tannoy Reveal 6D

Sure, PM me your mail address and I'll send it over.

hello,

I've inherited a couple of broken 6's of various ages, all with seemingly different issues across them all. After contacting Tannoy direct they are saying that they no longer hand out schematics.
Could you send me a copy of the schematics you have?

cheers

Foggy

[midibob]

Re: Tannoy Reveal 6D

Hi Islou,

You can get problems with the micro switches which can be a pain as they appear to be sealed, at least enough to stop cleaning fluid getting in. I seem to recall the the single switch next to the 8 switch block is the worst so I usually just give it a few clicks and it goes away for a while.

One thing definitely worth doing is removing the gunk around the two power resistors as this goes conductive and eats into the track! You can use a dab of silicon sealant to keep them in place. (don't use a glue gun!)

PM me your mail address and I'll send it over.

Midibob

PS:
If anyone knows a source in the UK for 120 ohm 5W radial cement resistors I'm all ears. Nothing on Ebay unfortunately.

[islou]

Re: Tannoy Reveal 6D

Hey Midibob,

Also have myself a set of revel 6D's which i'm having some problems with. Sounds very much like a dry solder joint on mine though, i completely lose sound and have to tap the controls on the back of the speaker to get it back. Strangely its starting to happen to the second of the pair too.

Was also a little disappointed on quality when dismantling them. Either way, went over what i thought were all the relevant solder connections but dont seem to have had much luck.

Don't suppose i could also grab the schematic off you ?

They do sound great when they are working !

[midibob]

Re: Tannoy Reveal 6D

Sure, PM me your mail address and I'll send it over.

[GoochC]

Re: Tannoy Reveal 6D

Midibob

Do you have the schematic. If so can you email it to me?

[midibob]

Re: Tannoy Reveal 6D

Hi Joe,

I hit this one too.
The best way I found to release it was to use a rubber mallet and keep lightly taping the fins of the heat sink till it releases.
My definition of taping is light taps, not knock six bells out of it otherwise you could damage the heatsink.
You should find it will come out without too much effort.

Good luck
Midibob

[Djoe The Architect]

Re: Tannoy Reveal 6D

Hi there guys, I seem to have a similar problem and was thinking of giving it a shot at fixing it; But I've already come up against a pretty basic problem : I can't get the amp out! Could you maybe give me a few pointers, I took out the main 6 screws on the back but there is no sign whatsoever of movement, the back plate is well and truly stuck in there...
Thanks for any help you can give me..!
Regards,

Joe

[midibob]

Re: Tannoy Reveal 6D

Sure is.
All very odd!

Midibob

[Radio Fox]

Re: Tannoy Reveal 6D

Hi Radio Fox,

Most definitely resistors. The types you're talking about are the same size as .25 or .5W resistors. These are ceramic blocks as can be seen from the pictures.
The board is strangely marked L1 which is why I put a question mark by it.
The schematic does have them listed as R however.

There was never any doubt in my mind that they were resistors as they feed the 15v power regulators.

Midibob

Ahh...sorry. I didn't realise that those 2 power resistors were L1 & L2. I only looked at the photo of the top side of the board, & L1 was hidden behind the heatsink.

I take it that L2 is also a resistor (220 Ohms)?

[midibob]

Re: Tannoy Reveal 6D

Hi Radio Fox,

Most definitely resistors. The types you're talking about are the same size as .25 or .5W resistors. These are ceramic blocks as can be seen from the pictures.
The board is strangely marked L1 which is why I put a question mark by it.
The schematic does have them listed as R however.

There was never any doubt in my mind that they were resistors as they feed the 15v power regulators.

Midibob