crwdns2934065:0crwdne2934065:0: 13
1
Hi, My pioneer VSX 819h went into protection mode. It now won’t enter service mode. I’m following the service manual. The only thing it does is turns on for 4-5 secs when pressing power button+adv-surround which according to the service manual is used for clearing the error counts. Thanks
crwdns2934109:0crwdne2934109:0
crwdns2934065:0crwdne2934065:0: 4.2crwdns2936485:0crwdne2936485:0
3
2
Until you resolve the protect mode, the amp will continue to work as you see it. Protect usually indicates that there is a short in the output section and the amp shuts down to prevent further damage. Since this amp uses discrete transistors for outputs, check each one for a short. Once found, change the entire pair (2SD and 2SC transistors) and any other components in the area that are effected.
Dan
crwdns2934105:0crwdne2934105:0
crwdns2936751:024crwdne2936751:0 1
crwdns2936753:07crwdne2936753:0 4
crwdns2936753:030crwdne2936753:0 12
crwdns2942667:0crwdne2942667:0 197
Thank you for this question. You mentioned how to enter service mode. (Power+ buttons) and that seems to have cleared my problem.
The unit seems to be working now. Thank YOU!
crwdns2934271:0crwdnd2934271:0 John Zipperer crwdne2934271:0
So yeah… I was able to turn it on, but after reconnecting it to the other components and powering it up it only worked for less than a minute.
But still, Thank you and I look forward to learning more.
JZ
crwdns2934271:0crwdnd2934271:0 John Zipperer crwdne2934271:0