Accuphase P-300L Power Amp Repair Part I - Troubleshooting

[@samb8996]

A very nice unit. I love Accuphase gear I like the way that you show little arrows to screws etc !

[@harryt988]

Oh it looks in very good condition! Great video !

[@elingdreamer94]

Nice work . on a side note ,I have an update on the accuphase e305v I have been working on. Last time I mentioned that the volume knob turn up by itself. Turns out the right channel of the power amp has burn out transistors and resistor thus somehow causing all sorts of problems. I removed the right channel and everything seems like it's working with out a problem. I am coming up with a reversed engineered Schematics for the e305v . One last thing , does the cement resistors (square long legged resistor near the transistor) measure with the resistance it's stated on the marking ? I have troubles verifying if it's resistor is defect since the multimeter reading does not match with the marking

[@VintageAudioFan]

Cement resistors are power resistors that are heat and flame resistant.The tolerances from the stated resistance value are around 5 percent. So if you measure the value exceeds (or under) too much than the marked value, you can consider them defective.

[@mariusakelis8689]

would you mind telling how much it costs you before repair :) ? just curious :)

[@aussie8114]

BIG capacitors 😲

[@johnsweda2999]

Take two of them off and running on less power would be better sounding amp Can you print your text in White it's hard to see thanks or red on white

[@VintageAudioFan]

I am trying to get a new video editing software which has the features to adjust the text colors and other functions. I am limited by the software I am using right now. I welcome any suggestions about the video editing experiences. Thanks.

[@jkahre]

there are schematics on the internet

[@VintageAudioFan]

I think there are schematics mostly for AQ P-300 (1st generation) which is different than P-300L (4th generation). However, please share the link of schematic of P-300L if you know there is one. Also thank you for the comment.