only left channel work

[jazzfan78]

hello i have problem with my crack.
i plug my hd800 and i hear only in left side, right channel no sound.
i been in friend house to check the hd800 with other amp to see if they are working fine. hd800 work with both sides.
i plugged other cheap headphone again only left side work.
i replaced big tube in crack from stock tube to SYLVANIA TUBE 6080WA but still no sound from right side.

here is my voltages check:

Terminal          Voltage                My Result
----------          ----------                -------------
1                        75-90                    147
2                          170                    199
3                          0                        0         
4                          170                    197
5                        75-90                    99
6                            0                        0                       
7                          100                    164
8                            0                        0
9                          100                    133
10                          0                        0       
11                          0                        0
12                          0                        0
13                          170                    198
14                          0                        0
15                          185                      205
20                            0                        0
21                          206                      212


should i replace the small tube as well?
or maybe i should buy a new RCA plugs or the problem is maybe the washers or something?

 

[jazzfan78]

?

 

[fullheadofnothing]

You have a bad solder joint somewhere in the signal path. Check your resistances again, you may find a discrepancy. It is also usually more expedient to simply resolder everything than try to figure out where the fault is.

 

[Paul Birkeland]

Do both halves of your 12AU7 glow?

Do both LED's on the 9 pin socket glow?

Please refrain from plugging in your headphones till your voltage at terminal 1 is resolved.

-PB