Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Registered members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Audio and Video Talk
Valves / Vacuum Tubes
Gunter Steinhart tvp-77ul
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support AVForums:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="cremanic" data-source="post: 1055084" data-attributes="member: 23852"><p>UPDATE</p><p></p><p>Magnoval valve sockets installed, had to modify the mount rings and fabricate collar rings for the sockets to mount on the PCB :thinking:, new capacitors(original Solen) and ceramic anode caps. Everything fitted perfectly after some modifications and tweaking. Connected the speakers and switched it on( First time in 10 years). Found only the one channel to be working and hopefully it is a minor fix, anyone point me into the right direction?. After some research I found out afterwards the new PL519's need to be balanced and bias to be adjusted because the one valve was running very hot. Pictures to follow</p><p></p><p>Noticed on the one transistor(Bu505), one leg of the 3 is missing while the other one have all 3?. And another, look like a resistor?, looks burned in some way.</p><p>https://postimg.cc/gallery/kD0Lbkw</p><p></p><p><a href="https://postimg.cc/6TDM8zQk" target="_blank"><img src="https://i.postimg.cc/c4J25bGL/Screenshot-20210429-185707.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p></blockquote><p></p>
[QUOTE="cremanic, post: 1055084, member: 23852"] UPDATE Magnoval valve sockets installed, had to modify the mount rings and fabricate collar rings for the sockets to mount on the PCB :thinking:, new capacitors(original Solen) and ceramic anode caps. Everything fitted perfectly after some modifications and tweaking. Connected the speakers and switched it on( First time in 10 years). Found only the one channel to be working and hopefully it is a minor fix, anyone point me into the right direction?. After some research I found out afterwards the new PL519's need to be balanced and bias to be adjusted because the one valve was running very hot. Pictures to follow Noticed on the one transistor(Bu505), one leg of the 3 is missing while the other one have all 3?. And another, look like a resistor?, looks burned in some way. https://postimg.cc/gallery/kD0Lbkw [url=https://postimg.cc/6TDM8zQk][IMG]https://i.postimg.cc/c4J25bGL/Screenshot-20210429-185707.png[/IMG][/url] [/QUOTE]
Insert quotes…
Verification
Post reply
Audio and Video Talk
Valves / Vacuum Tubes
Gunter Steinhart tvp-77ul
Top