Repairing Onkyo HTR667 aka 606

smartysmurf

Indeed, dsp reports ?????????????.
I might have destroyed the dsp while soldering the caps.
Will double check the daughter board tomorrow.
Thanks.

spldart

Oki doki.... Your dsp processor is not operating. Common failure that is not related to the cap job is a small 8 pin ic next to a crystal that handles clock duties having faulty connections or the ram IC underneath going bad. The ram looking ic on top next to the dsp processor is an eeprom and that rarely fails on this unit.... as appposed to the eeprom ic for the video processor which often gets corrupted by the cap failures that initiated all the current discussion.
More likely in your case, as your audio was working, is a blob of solder or something is defeating dsp operation. This is the same board you were working on. I'm saying this right now cuz you had the unit on long enough to get the firmware to report... This is generally not possible if the unit is throwing a protect.

smartysmurf

Yay! It is finally working.
I think the culprit was the one of the three white connectors next to the dsp chip. It might have become loosen when I took the daughter board out. When I firmly pushed the board, it started working. It seems very sensitive though. Small pressure to the board can make the dsp not functional. No more change to the setup.
Anyway, thank you, spldart.
Without your help, I probably would have ordered a replacement already.

spldart

I have occasionally seen situations where reflowing those connectors restored normal dsp operation. However... Not to argue with success if you can put the unit in service now then do so and later if the dsp drops out (no sound) then go back in and reflow those three white connectors.

FYI part of your dsp is on the hdmi board and part is on the adjacent (white connectors) board. That adjacent board holds the main micom, it's eeprom and your analog/digital digital/analog converter.... Not to mention your optical and coaxial digi audio inputs.

I know these units TO WELL. I did some research and it turns out I've done well over 300 TX-SR606's alone. Just that one model. And I've been doing onkyo service off and on since the '80s.... And they have had quite a few models out since then

tvine2000

I bought this model 2 years ago as a referb. i wonder if the issue you guys had , my amp had the same issue before they fixed it to resell.

smartysmurf

spldart:
Thanks for the tip.
How do you reflow the connectors? Do you mean re-soldering?

tvine2000:
It may be the case. I bought mine about 2.5yrs ago from amazon. It worked great until it recently developed the hdmi switching issue. Mine just refused to switch to anything other than hdmi's. The sound would work, but no videos. The cap fix described here fixed my issue.

spldart

Its possible. In the last 2 years this has become the prevelent failure. However I have seen many with a simple blown channel or damaged e-vol\analog selector IC. Q5501. It's a flat pack ic underneath the main board.
No way of knowing on a refurb without careful inspection of the various boards. Could have been anything.
Onkyo would know what was done but they will NOT tell you. Every once in a long while I can get them to give me some history on a unit I'm working on but generally not. And I'm authorized. hehe

scott9982

spldart -

i just read this and another post about the 606 HDMI issue. my 876 is exhbiting the same symptoms. any chance the HDMI board is the same or similar to the 606? i'm considering swapping out the caps and see if it helps.

Thanks

spldart

876 is a completely different animal than the 606. Nothing is gonna cross in advice (in reguards to similar hdmi failure in question). Your video firmware on your 876 reports ???????????????. This unit has a bulletin but it doesn't cover that.

scott9982

bummer! was hoping this woudl be a fix. have been experiencing the cold start "warm up" delay before i can get any video through hdmi. oddly, the OSD is visible immediately from a cold start, but trying to get hdmi from hd cable and dvd results in no video for probably 30 minutes, with the audio clicking in and out at a cyclic inteval. unit is about 18 months old, pretty sure it was a refurb. this symptom has progressively gotten worse in the last 6 months.

i'll check the firmware version and get back. thanks

spldart

Might wanna get that sucker off to a service center... if you don't have one local do not ship to the one showing as closest... go for a regional service center. Include a letter that gives as much detail as possible to help them diagnose

UtahJ

Hello all....

I stumbled upon this thread when my 606 started exhibiting the same symptoms everyone has experienced.

I replaced all ten 100uF caps and added the four "jumper" caps for good measure. I've been soldering for many years and everything seemed to go well until I plugged the unit in.

When I plug it in I get the standby light, but when I push the power button, I get nothing but clicking. The relay clicking is the one on the power board. I can't see any stray bits of solder, or wire anywhere in the unit.

What... the.... heck... did... I... do....?

jdlewis

Hello all, wondered if I could fit in a quick question,

I have an Onkyo TX-SR674 experiencing the same issues and wondered if these are considered a part of the 606 line of receivers.

spldart

674 is a different animal but has some issues.. I'll try to hit up this thread again on monday. gotta go through my notebook... been a while since a 674 crossed my bench

spldart

Keep looking for errors. You could put those tf caps on every regulator on the board and not have a problem.. And of course... replacing every 100uf 4v cap on the board isn't gonna cause an issue either.