Should there be connectivity between the 2 prongs of the switched outlet - Page 3

srinath · 11th April 2012, 06:10 PM

Quote:

Originally Posted by KatieandDad

Is it possible to isolate the HT outputs from the main board so that it would be safer to power up the PSUs ?

DO BEAR IN MIND THAT THIS IS THE RX-V800 SO THERE MAY BE DIFFERENCES.

I am planning on it 1 at a time today.
BTW the denon 3802 had these power transistors, in complimentary pairs, 5 pins per transistor, and in all of those the 2 left ones were soldered together with nice solder, the center was by itself and the 2 right ones were soldered together but they were barely soldered, Its like they started to solder and changed their mind.

Well 795 first, its a lot sipler than that denon.
Thanks.
Srinath.

srinath · 17th April 2012, 08:26 AM

The yamaha 795 - well, I am not sure what and how it was, but I resolered all the solder joints to the 6 transistors - and its almost like they know that needs to be done, its got a smaller panel on the underside you can take off without removing anything else in the amp.
So anyway I get it soldered and hit the power button with that panel still off and the amp still upside down, and it comes on and stays on.
I think wowee ... that was it.
The next time it clicks it self off again.
I go WTF ...
Then 10 on/off's later ... it stays on.
Then 10 more on/off's and it stays on.
Then 5 more.
Then 2 more ...
OK now it works.

Maybe the on off switch needed to be pumped and I tore the amp apart for no reason, then soldered the transistors ...

No clue, and the onkyo is next.

Cool.
Srinath.

srinath · 21st April 2012, 01:33 PM

The RX- V 795 has been working a few days now. I call it as fixed.
The denon 3802 - I repeated my trick of soldering the transistors, cleaning the heat sink compound and putting in new with new mica. That seems to work and its been tested albeit in shorter intervals and it seems to hold.

The onkyo - I found a very badly soldered Q951 transistor in it. I pulled it off and it actually looked like it had some signs of overheating. However it tested good in my transistor tester. I put it back in. Still the thing isn't working, in fact I tested various spots for the right voltage etc, still nothing.

Thanks for any ideas.
Cool.
Srinath.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
How noisy is your outlet?	lanchile	Solid State	17	25th February 2012 07:17 PM
Connectivity Question	morfius	Multi-Way	4	16th April 2008 11:32 AM
M/S outlet (AC)	bibster	Parts	3	24th January 2008 09:47 AM
Trigger switched outlet	robomatique	Everything Else	9	13th December 2007 03:09 AM
DCX2496 connectivity problems	MtBiker	Digital Line Level	0	15th June 2005 02:51 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

17th April 2012, 08:26 AM	#22
srinath diyAudio Member Join Date: Feb 2010	The yamaha 795 - well, I am not sure what and how it was, but I resolered all the solder joints to the 6 transistors - and its almost like they know that needs to be done, its got a smaller panel on the underside you can take off without removing anything else in the amp. So anyway I get it soldered and hit the power button with that panel still off and the amp still upside down, and it comes on and stays on. I think wowee ... that was it. The next time it clicks it self off again. I go WTF ... Then 10 on/off's later ... it stays on. Then 10 more on/off's and it stays on. Then 5 more. Then 2 more ... OK now it works. Maybe the on off switch needed to be pumped and I tore the amp apart for no reason, then soldered the transistors ... No clue, and the onkyo is next. Cool. Srinath.

21st April 2012, 01:33 PM	#23
srinath diyAudio Member Join Date: Feb 2010	The RX- V 795 has been working a few days now. I call it as fixed. The denon 3802 - I repeated my trick of soldering the transistors, cleaning the heat sink compound and putting in new with new mica. That seems to work and its been tested albeit in shorter intervals and it seems to hold. The onkyo - I found a very badly soldered Q951 transistor in it. I pulled it off and it actually looked like it had some signs of overheating. However it tested good in my transistor tester. I put it back in. Still the thing isn't working, in fact I tested various spots for the right voltage etc, still nothing. Thanks for any ideas. Cool. Srinath.