PDA

View Full Version : Maintenance, Troubleshooting & Repair



Pages : 1 2 3 4 5 [6] 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

  1. Fender Blackface Tremolux RED HOT
  2. OH no this amp is so clean!!
  3. Mojo 5E3 bias (heat?) issues...
  4. Vox AC30-6/TB with Loud Xfmr Mechanical Hum
  5. Bose Acoustic Wave Radio AWRCC2 Noise
  6. Chicago Blues Box - blowing tubes
  7. RC4739DB substitution
  8. Laney VC30 Porblems
  9. measuring output power
  10. Super Champ XD Red light on. Channel select light off. No Sound.
  11. Laney AOR series 2 100 watt/Laney pro-tube 50 watt
  12. JMI VOX AC30 Motor Boating on Normal Channel - Help
  13. Crackling/buzzing with higher volumes in a Carvin X100B combo.
  14. Top Boost preamp anomaly Q
  15. Pwavey CS800X
  16. Ampeg PF500
  17. Roland JC 77 reverb issue
  18. Orion Lasers
  19. HI new to the group.
  20. SF Vibro Champ, no vibrato
  21. 6L6 tubes for Peavey Deuce?
  22. Crate VC3112 clean channel noise
  23. Ampeg B15 with dreadful hum Help
  24. Mircophonic SS amp?
  25. 6L6 tubes
  26. 59 Fender Super amp, replaced PT heater question
  27. Hartke 10" replacement suggestions?
  28. 100w valve head cutting out
  29. Princeton Reverb clone tremolo intensity help
  30. Tips to remove stuck chassis from cabinet?
  31. Noisy pots
  32. B-52 AT-100, won't power on... please help!
  33. Dean Markley CD120
  34. Hartke A100
  35. Loud Hum in 1974 Twin Reverb
  36. Laney dp100 bass amp disaster
  37. Old Gretsch Amp - need schematic and advise
  38. fender Prosonic 22 hum problem
  39. Need some hel retrofitting new PT into 70's Dual Showman Rvb
  40. Deluxe Reverb RI - Buzzin'!
  41. Marshall MG50DFX no sound on CD, main input, or FX return.
  42. Soundcraft EFX8 vs heavy falling object
  43. OR120 Pix Only Help!
  44. Servicing noisy pots on late Fender Pro Reverb Amps---PCB removal insanely difficult
  45. Need advice replacing some caps in old tube amp
  46. VOX AC15 virtually no output (volume) even with volume all the way up
  47. Crate BX-25 Intermitent Volume levels
  48. Harmony H406 distorted Really low output
  49. GK800RB Pwr Transformer question
  50. GK 250ML speakers
  51. Crate Taxi TX15 battery full but dosent work
  52. Frontman 212R Power Amp Problem
  53. Bassman 50 volume issue
  54. Marshall valvestate 8080 repaired?
  55. Peavey Vypyr 75 blown fuse
  56. Marshall JCM 2000 DSL 100 - tubes red-plating
  57. Have the problem with Fender Passport 500pro
  58. JCM2000 DSL 100W Head issue resolved!
  59. Carvin vt112 low output
  60. Fender The Twin Resistors?
  61. Engl Fireball 60 crackling on warm up
  62. I don't know how you guys do it!
  63. Kustom K100-2 reverb problem
  64. Gallien Krueger 200MB - Low voltage at rectifier
  65. Fender Super Reverb silverface Hum
  66. Power Problem Maine Amp
  67. 1948 Fender Champion 800 no output
  68. Bugera 333 Hum and radio station
  69. Which model Boogie is this?
  70. Fender Hot Rod Deluxe snap , crackle , pop ...
  71. fender hrd speaker blown
  72. Harmony H500 AC cord mod
  73. Marshall mg50dfx
  74. NPN Transistor question
  75. Peavey Classic 400 Tube Bass Amp - Preamp issue
  76. Gibson Vanguard GA77RVT Troubles - Reverb on Normal Channel
  77. Peavey XR600E (Dead)
  78. Power Transformer - Rivera-era Fender Concert
  79. Peavey Folded Line Reverb Tank
  80. Silvertone 1431 6AU6 Screen Grid Trimmer
  81. XLR/1/4" combo jacks for QSC
  82. Help a novice finish a vox 15r pot repair
  83. Interference from EOP devices
  84. Twin Reverb Issue
  85. Proper way to test a Power Transformer after an amp meltdown?
  86. Peavey CS-800x power board circuit short
  87. DOD 831 II Graphic Eq. Will someone help to troubleshoot this dead unit ?
  88. AC power test setups and tools; GFI as a tester
  89. SVT CL brief buzz coming out of standby
  90. hot rod deluxe PT voltage?
  91. Hartke LH500 Protection Circuit
  92. Pickup issue
  93. SVT 3 PRO - hum
  94. Peavey Valveking VK212 100W Combo: No Tube Power
  95. Fender DRRI reverb problem suspect footswitch please help going crazy!
  96. Sope question
  97. Ensoniq SQ-80 losing polyphony voices
  98. loud intermittent humming problem
  99. Carvin X100 speaker fuse
  100. Traynor YGM-3 Reverb Fail
  101. Fender Super 60
  102. DFX Professional 215X
  103. Cooling fan re-connection
  104. Amcrom Power Stage 2 O/P problem
  105. HELP!...peavey bass head mark III series buzz problem...HELP!
  106. Popping tremolo - dead amp
  107. Laney hair puller
  108. Reverb oscillation fixed
  109. Fender Super Bassman Automatic Bias issues
  110. Varisistor ratings in a Fluke 8010A bench meter
  111. ampeg sb12 very high voltages
  112. Ampeg B200r trouble
  113. Marshall AS50R with a loud popping sound on switch on
  114. Is this one possible failure mode for filter caps?
  115. Bad red plating problem!
  116. Tracking a Princeton Reverb build hum!!!
  117. Anoten twin reverb 65 ri with reverb hum
  118. Crate GLX212 preamp screeching sound
  119. Power Amp module for Marshall MG100hdfx wired wrong
  120. Pot cleaning
  121. Mosfet Question (Trace Elliot)
  122. Yamaha P7000 Service Manual in English?
  123. Blues Deluxe Low B+ voltage crackling distorting
  124. Fuse Blowing Issues
  125. Tube Sockets
  126. 1984 Legend A30 Series II Power Transformer Question...
  127. Gibson GA77 RET-L Lancer, help with zenor diode replacement
  128. Burns Orbit Three - Ticking
  129. Source for Reverb Tank Transducers?
  130. Trace Elliot Velocette questions
  131. SVT-CL: Another one for the guru :-)
  132. High B+ voltage in '60s Ampeg Gemini
  133. Fender '68 Custom Twin Reverb Hum
  134. Solid State Acoustic Guitar Amp - Hum Problem
  135. TSL100 noisy when VPR switch pushed in
  136. Bogner Shiva Power Tube Pins 1&8 Not grounded?
  137. Soldano Lucky 13 (Leaking o/p board?)
  138. Help Fixing my Sessionette 75 AMP Power Module
  139. Peavey VTX Heritage phaser
  140. Any tips on reflowing solder on PCB?
  141. Peavey Envoy 110 Transtube (red stripe) question - crackling on sustained notes
  142. audio testing of amplifiers...espically home audio and PA...
  143. High voltage replacement caps
  144. Behringer PMP1000
  145. Ampeg V9 SVT filament transformer hum and vibration
  146. Yorkville NX750P
  147. Fender Twin Reverb 65 RI keeps blowing 8 amp filament fuse
  148. Marshall JCM2000 TSL100 Footswitch problems
  149. My fender stage 185 amp won't power up
  150. Ampeg SVT-3 Pro Repair help, R27 catches fire on power up
  151. Marshall JCM 800 (2203) Microphonic O/P Valve problem.
  152. Hot Rod Deluxe, 1996, at my wits end - hum problem won't go away!
  153. Kustom Challenger
  154. Finding Plate Voltage
  155. Reverb Tanks: An Orientation Experiment
  156. Ugly distortion with tube amp when you play
  157. Sound City 120R: need some advice
  158. Another Antique Peavey
  159. Ampeg SVT-CL/AV Tech Flex replacing Clear Vinyl 'garden hose' harness sleeving
  160. Preamp DC Heater Help
  161. Peavey Bravo Plate voltage
  162. Carlsbro TC200 recap
  163. Ashdown MAG 600 Blows Fuses
  164. Otange AD140 real output power?
  165. Gibson G50 hums...
  166. V4 ONLY works on my bench
  167. Hammond output transformer help
  168. Mesa Mark V sneaky or annoying?
  169. Ampeg STV 4 Pro MOSFET replacement and other Qs
  170. New amp with high voltage on the transformer
  171. SVT-CL: Protection at Turn-On
  172. Carvin Pro Bass II
  173. Power transformer secondary
  174. jcm 900 mkIII combo safer connection with mesa boogie 4x12 cabs
  175. Fender Ultimate Chorus issues
  176. 5mm SQ Red/Yel LED's for Fender HR DieVille Amps, Pedals
  177. Crackling, splattering in amp...
  178. MusicMan 1650RD troubles
  179. Marshall JCM900 SL-X 50Watt high gain master volume 2500 Muffled sound
  180. Hot Power Transformer, Budda SD30-II
  181. Fender Twin Reverb....silver face
  182. Parts for a Peavey 212 SF?
  183. Fender Super Sonic 22 Vol and Bass drop on Burn ch.
  184. Deluxe Reverb - weird vibrato oscillator voltages + choppy trem
  185. Problem with Univox U130L
  186. OK comrades...MIG 100B and MIG 100H Differences?
  187. Egnater Tweaker 40-Really bad ground pops on many swithces.
  188. Ampeg SVT Classic Bias Light issue
  189. Crate GTX3500H Tidal Wave - Channel 3 Inoperative
  190. Kustom K200A.4
  191. Eden Nemesis RS210 - 60vdc at speaker output
  192. Vox AD100VT = Fart Machine!
  193. Gibson GA19 RVT tremolo issue
  194. Fender Bassman AA165
  195. 65' twin reverb reissue hum with reverb
  196. Crate V1512 Cracklin, popin, humin...loudly
  197. Pop, fizz, stink, and a new hum on a homegrown tweed tremolux. Looking for ideas.
  198. Roland AC-33 low output
  199. Peavey Classic Chorus 212 channel switching problem
  200. Odd Jubilee switch/pot
  201. HK Tube-sheister 36
  202. SMD code PJ88 Diode SMB8 package
  203. Need a new source for 25uf/25v axial caps.
  204. Peavey replacement basket compatibility
  205. Marshall JCM 800 4211 Combo Blowing HT Fuses
  206. Hot Rod DeLuxe I switching problem
  207. 65 Epiphone Zephyr amp would be the same as Gibson what??? Reverb problems, help
  208. Marshall JCM800 2203 with oscillation on output
  209. JMI VOXAC30 TOP BOOST low headroom.
  210. SPMS repair, IR21531, please help.
  211. Mesa Boogie Nomad 55 strange noise. Please help.
  212. MB Dual Rect Tremoverb
  213. PV 1500 Thermal issue
  214. Gallien Krueger Fusion 550
  215. Marshall JCM800 2205 Problems
  216. Martin Pro Stage lighting
  217. Conductive Eyelet Board
  218. Gibson GA77 RET needs new Power Transformer
  219. Ampeg J-12T RI red plating
  220. Knobs won't come off Bassman 100 combo
  221. Bose PS1 wtf?
  222. Fender Frontman 212R distortion problem
  223. Marshall MF50DFX
  224. SWR Strudio 220 5kHz Oacillation Problems
  225. Spam
  226. PT go BZZZZ
  227. Vox AD60VT - I volunteered to help friend fix amp and am now stuck with just hum
  228. Fender FM212r no channel switching
  229. Fender HR Deville Had a Drink.
  230. JMF Spectra 112 power transformer
  231. jcm800 mk2 lead pitch noise in V1
  232. Eden WTB700 distortion control faulty
  233. 70's Ampeg V4: early breakup
  234. Belton reverb tank went microphonic (relatively short lived)--this the new normal?
  235. Help need board for my ibanez roadstar base
  236. diode and cap quest
  237. CRATE FXT 120 No Sound Output??
  238. Mono Preamp, Stereo Power Amp: Not Enough Gain!
  239. Ampeg Gemini 2 recapping problems
  240. Sunn 1200S PA distorting
  241. Musicman RP-65 (2165-RP) distorted sound, even at low volumes
  242. Behringer Europower PMP4000
  243. Question on preamp section - Elka tube amp
  244. Musicman 2475 - 150 questions
  245. NJM2147D Substitute?
  246. De-buzzing MusicMan HD130 - any suggestions?
  247. Randall RD50 Bias
  248. Crate TD50B replacement input jack - parts numbers/suppliers?
  249. SVT CL 1997 slm pre out power in issues
  250. Low volume, possible cathodyne issue, help needed.