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Topics	Replies	Author	Views	Last Posts
Center 12AU7 bright on start-up	2	Brap	314	Tue Dec 13, 2022 9:34 am by Brap
M125 No sound	1	rwbaker	374	Tue Dec 13, 2022 9:19 am by Bob Latino
Strange output behavior, VTA ST70 with speakers	6	docswanson	778	Fri Dec 09, 2022 4:30 pm by Roy Mottram
Vacuum Tube Values.com	4	Brap	965	Sat Dec 03, 2022 4:12 am by MechEngVic
Quad Cap Question for ST-70	2	litefootdan	1026	Wed Nov 30, 2022 3:32 pm by litefootdan
VTA ST-120 Coming Out of Mothballs	0	arledgsc	582	Wed Nov 23, 2022 11:20 am by arledgsc
st-70 Telefunken driver tubes	1	Brap	386	Tue Nov 22, 2022 2:39 am by peterh
Dynaco paint question	5	WLT	697	Mon Nov 21, 2022 7:51 pm by David1948
ST120 with no speakers connected???	4	Rbertalotto	357	Sun Nov 20, 2022 1:37 pm by Rbertalotto
Just Wondering	2	jwb474	390	Sun Nov 20, 2022 1:36 am by jwb474
Scratchy noise from one channel in new ST-70 build after 5 weeks	4	bootstrapjesse	654	Sun Nov 13, 2022 9:57 pm by bootstrapjesse
st 70 ,new to tubes	2	zapped1	397	Sun Nov 13, 2022 1:55 am by zapped1
ST 70 power transformer	3	zapped1	536	Sat Nov 12, 2022 7:10 pm by Roy Mottram
5U4G new rectifier replacement	2	baddog1946	532	Sat Nov 12, 2022 7:09 pm by Roy Mottram
A Question About ST-70 Can Capacitor Upgrades	15	quadaptor	12321	Tue Nov 08, 2022 11:09 am by Bob Latino
HUM, HUM ISSUES (resolved !)	13	pedrocols	903	Mon Nov 07, 2022 12:44 pm by pedrocols
Noisy MK IV amps. SOLVED Trouble shooting insight appreciated.	5	fasturd	769	Fri Nov 04, 2022 3:15 pm by fasturd
VTA-120 Possible Pentode/Triode Switch Problems	7	jimmeq	675	Mon Oct 31, 2022 6:03 pm by jimmeq
Which Version VTA 70 Is This?	6	knotscott	912	Mon Oct 31, 2022 8:36 am by Bob Latino
Which NOS 6AN8A?	3	rembrandt!	483	Sun Oct 30, 2022 9:23 pm by MechEngVic
Dyna PAS 2 for the group	6	WLT	968	Sun Oct 16, 2022 10:52 pm by daveshel
Keep blowing Weber WZ68 rectifier on ST-120	4	nathico	815	Sat Oct 08, 2022 1:20 pm by nathico
PH14 With Volume Control	4	Rec	595	Sat Oct 08, 2022 10:57 am by Rec
Strange set of RCA EL34s. Any idea about the design?	2	ccarlton28	641	Mon Oct 03, 2022 8:57 pm by Jim McShane
ST-70 what is a safe input VAC	11	raudio44	752	Fri Sep 30, 2022 8:56 am by Brap
VTA ST120 - Lost right channel, help needed	9	willythree	1344	Wed Sep 28, 2022 11:47 pm by rebellovw
Brand New PSVane KT88s blew 3 fuses and 3 5AR4 Rectifiers in ST70	14	arremondo	1683	Tue Sep 27, 2022 5:38 pm by Roy Mottram
ST-120 tube redplate. Not a bad cathode resistor. what to check?	5	ChetJettison	417	Tue Sep 27, 2022 1:59 pm by peterh
VTA 120 hum then high voltage at one pin	1	Beachlandguy	396	Wed Sep 21, 2022 2:26 am by peterh
PH16 tube rolling positions question	19	mdelrossi	2017	Fri Sep 16, 2022 1:05 pm by carlsor
PAS Circuit Question	2	breading	565	Fri Sep 16, 2022 12:15 am by daveshel
Coupling caps for 6SN7 driver board question	1	Telescope12	598	Mon Sep 12, 2022 3:43 pm by Bob Latino
MK3s new build issue	5	MHProd	757	Sun Sep 11, 2022 12:55 am by MechEngVic
Bad mechanical hum after installing Chinese "KT88" PSvane tubes and blowing 4 rectifiers	9	arremondo	1115	Sun Sep 11, 2022 12:44 am by MechEngVic
85 deg C capacitor--advisable for VTA board?	2	colin86325	401	Sat Sep 10, 2022 2:00 pm by colin86325
Rebuilding my M125s - can I use this cap in the SCM module? 1, 2, 3	56	rebellovw	3904	Wed Sep 07, 2022 3:10 pm by rebellovw
Psvane KT88C and ST-120	5	smoorenc	1294	Tue Sep 06, 2022 12:13 pm by New2Tubez
ST-70 chassis ground	4	bootstrapjesse	769	Sun Sep 04, 2022 4:23 pm by bootstrapjesse
Interesting ST 70	1	Dave_in_Va	679	Tue Aug 30, 2022 5:39 pm by Bob Latino
Increase Bias Supply -Voltage	6	TubesGlo	1203	Wed Aug 17, 2022 10:07 pm by fredeb
Mark 3 fuse blows after hours of use	7	jrethorst	728	Wed Aug 17, 2022 1:33 pm by Bob Latino
[ Poll ] New PCB color option?	1	Dan W	898	Mon Aug 15, 2022 8:29 pm by Gabriel
Stereo/Mono Switch....	5	wolverine	10902	Fri Aug 12, 2022 7:08 am by lorne
PCB Color Polls	2	jwb474	428	Fri Aug 05, 2022 11:18 am by DavidR
Paint Color?	2	Joe302	620	Tue Aug 02, 2022 4:03 pm by Joe302
ST-70 NO BIAS	14	joseramonnavarro	924	Thu Jul 28, 2022 6:21 pm by Roy Mottram
New PSVANE KT88 and my Dynaco MK3s	4	bubbasweet	827	Wed Jul 27, 2022 6:05 pm by arremondo
Starting the st120 up without speakers	6	Guest	700	Tue Jul 26, 2022 8:14 am by cci1492
EL 34 tubes in Mark 3 amp	14	jrethorst	980	Thu Jul 21, 2022 3:10 pm by WLT
Dyna Mk lll question	6	MarkS57	669	Thu Jul 21, 2022 9:52 am by peterh